Re: [meteorite-list] Meteorite Contest, Free Gao-Guenie

2003-02-22 Thread John Divelbiss
Mark and others,

I couldn't seem to come up with anything unique so I asked one of my
sons...and his answer is better than any original response I was thinking
of. Here goes.

Meteorites are cool because they are from way out in outer space, and we
can't go there. And it is cool to have things from outerspace.

I agree.

Thanx for another fun subject,

John


- Original Message -
From: MARK BOSTICK [EMAIL PROTECTED]
To: Meteorite List [EMAIL PROTECTED]
Sent: Thursday, February 20, 2003 3:07 PM
Subject: [meteorite-list] Meteorite Contest, Free Gao-Guenie


 Hello Everybody,

 I havent done a meteorite contest in a little while so, without further
 delay..

 Meteorite Contest #8?

 The prize in this contest is a free Gao Guenie, 13.4g with 95% black
crust.
 Smooth on all sides but one, almost an oriented shape.

 I am going to be doing a few school presentations here soon and the most
 comment thing I here from kids on meteorites is Cool!.  So, with that in
 mind.

 The Winner of this contest will complete the following sentence.

 Meteorites Are Cool Because.

 This is close to the African Meteorites are cool contest but different in
 the fact that it is more broad and therefore should have quite different
 answers.

 E-mail your answers to the list, no limit on how many words you use, the
 contest expires next Tuesday, all decisions final, and e-mail any
questions.

 Mark Bostick
 Wichita, Kansas

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Re: [meteorite-list] Snow and Mars water and meteorites

2003-02-21 Thread John Divelbiss
Pictures I've seen from the rover that was on Mars makes it look like the
typical rocks are weathered to a rusty brown color...like many
olivine/pyroxene (w/iron) rich rocks here on earth.

Can anyone tell me if this is thought to be the case, and do any of the Mars
meteorites found show any signs of weathering from it's existence on Mars?


John


- Original Message -
From: Francis Graham [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Friday, February 21, 2003 10:28 AM
Subject: [meteorite-list] Snow and Mars water and meteorites


   Mike Reynolds forwarded an interesting article about
 Snow pack providing the pressure for Mars water to
 exist and form gullies.
   If this is true, since snow (sublimated frost) can
 form anywhere on Mars, there ought to be more gullies
 in the lower elevations (say, the rim of the Hellas
 Basin) than in the higher elevations (Tharsis
 plateau),  at similar distances from the equator.
 This is because the pressure on Mars is near the
 Triple Point pressure, and a similar amount of snow in
 either place ought to produce more gullies in the
 place where the air pressure helps most.
   There are some assumptions here, and certainly the
 gulley system shows a wide range of ages. One must not
 be too hasty in jumping to conclusions, but a
 superficial glance does show more larger gullies at
 lower elevations. A precise count and control for age
 from crater counts may be helpful.
   Further, there should be some variation in the
 alteration of same-age Martian meteorites originating
 from high elevation on Mars to low elevations. As the
 Morroccans busily increase the sample (and
 non-Morrocans like Mr Verish :), we will see.

 Francis Graham




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Re: [meteorite-list] Slikensides ?

2003-02-20 Thread John Divelbiss
Bill,

Thank you for this informative response. I have a nice chunk of Zag that has
one surface that looked like a slickenslide...but I've had doubts because it
looked smooth/polished, and I was thinking these subtle striations should be
grooves with edges. Not the case by your answer.

If I can get a good picture of it this weekend, I'll send it to Jeff in
Australia and see if he'll put on his site. Thanks again for clarification
for all of us.

John

- Original Message -
From: Bill Mason III [EMAIL PROTECTED]
To: Michel Franco [EMAIL PROTECTED]; Meteorite List
[EMAIL PROTECTED]
Sent: Friday, February 21, 2003 12:29 AM
Subject: Re: [meteorite-list] Slikensides ?


 Michel,
 Perhaps I can give you an insight into just what slickensides are
all
 about. A slickenside is a fault surface or fault-plane which exhibits
 movement and dislocation,frequently warped,broken,and frequently offset.
 When you see a true slickensides it is polished because the sliding
surfaces
 are under great pressure as they move slowly, opposing surfaces are
polished
 and often striated grooved.
 If you are thinking of impact structure you will most likely find
 evidence of directional striations as in a dynamite exposition but you
will
 not see the polishing as evidenced in slickenside.
 Bill Mason

 - Original Message -
 From: Michel Franco [EMAIL PROTECTED]
 To: Meteorite List [EMAIL PROTECTED]
 Sent: Thursday, February 20, 2003 1:00 AM
 Subject: [meteorite-list] Slikensides ?


  Dear list
 
  I am looking for information about SLIKENSIDE formation.
 
  Does they come from a shock in the cosmos or do they form when landing
on
  Earth ?
 
  Any detail will be appreciated.
 
  Thank's in advance.
 
  Best regards
 
  Michel FRANCO
 
 
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[meteorite-list] follow-up finds and their documentation

2003-02-18 Thread John Divelbiss



Hello all,

I'm about to ask one of those wandering (also wondering) 
questions again...one that probably won't be answered to everyone's 
satisfaction, especially mine. Here goes...

With all the latest Campos, Sikhote Alins, Kainez, Gao, Gold 
Basin, and others (I'm sure) being found these days...what (if any) verification 
and documentation is done with theselatest finds of known meteorites. Are 
finders required/supposedto follow any particular stepsto comply 
with the rules(whatever they are)of the Society that should eventually 
affect the total weights for these known falls/finds. Is the 
documentationof these and other "follow-up" findsout of control 
these days with the interest of meteorites being so high, and the desire to find 
more specimens paralleling that interest?I'm just curious. It doesn't 
bother me one way or the other...I just find the issue very daunting from a 
documentation point of view.

I suppose a newly foundSikhote Alin looks like the ones 
found years before...and that most buyers look at it and say that is a SA 
andwould buy it. Is it documentedand added it to a running total? Is 
it supposed to be?Campos are also somewhat distinct in their appearance, 
but I'm not sure I could tell if one is for sure...if someone asked. The stones 
are often distinct in their appearance for a given name meteorite, and most 
buyers know what they are looking at...but (for example)some Gold Basin look 
just like many NWA's found in recent years.Weathered...and old 
looking.

The source of supplieris always the key for us 
buyers...we have to have trust. The IMCA helps this situation in my 
opinion.Another key is tovisually recognize the look of a particular 
meteorite from experience. A problem with this is that the experience level for 
recognizing a given meteorite can have a wide range within a group of 
buyers.

Notice I did not lump NWA's into this because it becomes even 
more gray as you look at them...from my simple mind's perspective. However, the 
scrutiny is much higher for them than the others...even though the level of 
"documentation" maybe the same...none, other than it looks like the others and 
were found in the vicinty of the original finds. 


Be gentle,

John



Re: [meteorite-list] when will the US see another meteorite fall and recovery?

2003-02-16 Thread John Divelbiss
Eric and others,

The fireball in PA was a big one. I missed seeing it by seconds...I was out
front working and stepped in for a minute for a drink of water...only to
miss it. As for where it landed...possibly in the bordering counties of PA
and NY, near the middle of PA. There is some farmland in that area...but
most of it is heavily wooded eastern mountains (or foothills to you Western
guys). Tough terrain to find a couple rocks...especially when most of these
two states are one big rock,  thinly covered by a little bit of topsoil and
vegetation...the woods and underbrush are almost jungle like in many of
these areas. A tough area to find meteorites...as far as I know from
reports, no one saw it come in close anywhere...so they are probably sitting
on the side of a mountain covered by six inches of leaves, etc. and two feet
of snow (right now).

The mountains and terrain of Colorado also offers great challenges to
finding these falls.

Flatlands and deserts are obviously the optimum locations for falls.

John

- Original Message -
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Sunday, February 16, 2003 1:56 AM
Subject: Re: [meteorite-list] when will the US see another meteorite fall
and recovery?


 In a message dated 2/15/2003 8:31:52 PM US Mountain Standard Time,
 [EMAIL PROTECTED] writes:

  Here in Colorado over the last 4 years, we have had at least 8 bright
 fireballs that were tracked and trajectories calculated. Thanks to the
local
 museum, they have been publicized in newspapers and on TV (a la the
Nininger
 way).  One of these (to my current knowledge) has produced a meteorite.
 However, the others were certainly large enough to produce meteorites. So,
to
 answer your question, we are not in a meteorite drought, just most are
never
 recovered or if they are, they are not linked to a fireball event or made
 public. 

 As I recall  there was a huge fireball in New York/Pennsylvania a
couple
 years ago that did not result in a found meteorite.  Also a big fireball
in
 Arizona between Phoenix and Tucson a couple years ago that the University
 conducted searches for that resulted in good exercise but not a meteorite.
 They are dropping by, but nobody is around to welcome them home.
  I was joking with somebody about building an electromagnet a mile or
two
 across to collect meteorites.  The thought of sucking a mercedes benz off
the
 highway and the resulting lawsuits seemed to be a problem to some, but I
 image it would be a sight to see!

 Eric Olson
 http://www.star-bits.com

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Re: [meteorite-list] when will the US see another meteorite fall and recovery?

2003-02-16 Thread John Divelbiss
Mike and others,

Since it has been snowing all day and is expected to do the same all day
tomorrow (total of 30 inches or so)...I think I'll have time to read more of
Nininger's book.

The one thing that stands out from his book accounts of searching and
finding meteorites (usually indirectly through others) is that he worked
really hard at it. If it were a fireball he was chasing...he would drive
hundreds of miles around (at least three sides) of a suspected fall,
interviewing people to (mathematically) determine the fall area within
several miles in each direction. Then he would focus on that area, educating
people by showing them real meteorites he had in his pocket, and telling
them to contact him if they found anything. He would go to schools,
assemblies of all types, etc. to spread the word of the local fall...and of
course the promise of money if they found some. Often he would have to wait
several months to a year or more to hear from people from that area. And
like today's experiences, he often came up empty from his efforts.  He had
great perseverance.

Some interesting things he said that should be remembered...1) meteorites
usually stop burning  and go out about eight miles or so up because the
velocity is much lower than when it first hit the atmosphere, reducing
friction.. 2) If you see a fireball go into the horizon...it is not just
over there, it is probably a couple hundred miles away (why? refer back to
item 1)  3) Where one or a few specimens are found from a significant new
fireball, there are probably many specimens still out there to be found.  4)
And last but not least, go back to where older falls/finds have occurred and
try searching for, and asking about more meteorite finds.

Well I'll stop yapping and say goodnight,

Happy Hunting,

John

PS It still blows my mind that Bensour fell in the middle of the largest
ongoing meteorite search field (NWA) in the world. Crazy 


- Original Message -
From: Mike Reynolds [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Sent: Sunday, February 16, 2003 8:45 PM
Subject: [meteorite-list] when will the US see another meteorite fall and
recovery?


 Hi John and all,
   This might be worth following up on if anyone feels ambitious or should
 find themselves in Massachusetts with a whole lot of free time on their
 hands. I don't know if anyone remembers this post and a few other earlier
 ones which referred to a possible fall which may have occurred more or
less
 in my own back yard. Shortly after having read the first report, I took a
 day trip from the Boston area to check things out. I only looked in the
area
 of a golf course near Amherst, that according to at least one eyewitness
 would have been in the area of it's flight path. Needless to say, I came
 home empty handed. This was reported to have occurred just about the same
 time as the Bensour fall which hit just across the pond from US.
 A coincidence?
 Best Regards,
 Mike Reynolds  IMCA #8127



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[meteorite-list] when will the US see another meteorite fall and recovery?

2003-02-15 Thread John Divelbiss



Hello all,

As David Hardy suggested...things sure are slow on list. I'll 
try to add something.

I'm reading Nininger's book, Find A Falling Star. I'm only a 
third of the way through...and I'm hooked! I keep looking out back to see 
if a fireball might be passing by... or maybe I'll find a nice size crater in 
the backyard when I take the dog out in the morning. Al Mitterling told me this 
book would stir my desires to go out and find a rock from space. Everyone 
interested in meteorites should read it. What a story Nininger had to 
tell. Let's hope Steve Schoner gets well enough to share his observations 
of the man he met with years ago.

In the book he seems to be running from one fall or find to 
another for about 20 years (so far, from my reading)...mostly in the US, Canada 
or Mexico. Falls seemed to happenmore frequently during those days, 
especially in the Midwest. My question is...are we in a meteorite drought 
(falls)here in the US and elsewhere, or is their no one out there doing 
what Nininger did when a fireball is witnessed? Obviously it takes lots of 
people interested in finding them to eventually bring them to someone like a 
Nininger...who advertised in papers, spoke to groups and individuals, offering 
money, etc.

I knowwe've had sightings...but I think the last 
recorded meteorite falls in the US were Portales Valley and Monahans in 
1998. Can anyone come up with a later one? I think we are in a drought. 
Let's hope this is the year we see another or two...and of course, it happens in 
the backyard of someone on the list.

When


John


Re: [meteorite-list] when will the US see another meteorite fall and recovery?

2003-02-15 Thread John Divelbiss



Matt, Tom, Dirk, Michael and others,

From Dirk's and Matt's reports, they are still out there 
falling. 

Maybe as Nininger promoted, the finds are out there to be had 
too.Possibly the latest energies by David Freeman and others to help 
educate the public will be the starting point fora new batch of 
finds. If the IMCA group (including me) can help "turn up the volume", maybe we 
all will benefit with some more materials. As for running around after falls, 
well that will take someone with lots of time on his/her hand. 

John

PS does the new fall in Colorado have a name, 
Matt?

  - Original Message - 
  From: 
  Matt 
  Morgan 
  To: [EMAIL PROTECTED] 
  
  Sent: Saturday, February 15, 2003 10:32 
  PM
  Subject: Re: [meteorite-list] when will 
  the US see another meteorite fall and recovery?
  
  Hi John and list:
  I too have been thumbing through Find a Falling 
  Star; read it once and am re-reading sections.
  Nininger did always seem to be running after 
  falls. Virtually every fireball he heard of, he went 
  to investigate, and if it wasnt for his knowlegde and diligence, we 
  wouldnt have most American falls during the 1920s-1950s in our collections. I 
  dont think falls were more frequent, just that he followed and reported 
  them to thepublic and media. Here in Colorado over the last 4 years, we 
  have had at least 8 bright fireballs that were tracked and trajectories 
  calculated. Thanks to the local museum, they have been publicized in 
  newspapers and on TV (a la the Nininger "way"). One of these (to my 
  current knowledge) has produced a meteorite. However, the others were 
  certainlylarge enough to produce meteorites. So, to answer your 
  question, we are not in a meteorite drought, just most are never recovered or 
  if they are, they are not linked to a fireball event or made 
  public.
  
  Matt Morgan
  Mile High Meteorites
  http://www.mhmeteorites.com
  
- Original Message ----- 
From: 
John Divelbiss 
To: [EMAIL PROTECTED] 

Sent: Saturday, February 15, 2003 7:35 
PM
Subject: [meteorite-list] when will the 
US see another meteorite fall and recovery?

Hello all,

As David Hardy suggested...things sure are slow on list. 
I'll try to add something.
I'm reading Nininger's book, 
Find A Falling Star. I'm only a third of the way through...and I'm 
hooked! I keep looking out back to see if a fireball might be passing 
by... or maybe I'll find a nice size crater in the backyard when I take the 
dog out in the morning. Al Mitterling told me this book would stir my 
desires to go out and find a rock from space. Everyone interested in 
meteorites should read it. What a story Nininger had to tell. Let's 
hope Steve Schoner gets well enough to share his observations of the man he 
met with years ago.

In the book he seems to be running from one fall or find 
to another for about 20 years (so far, from my reading)...mostly in the US, 
Canada or Mexico. Falls seemed to happenmore frequently during those 
days, especially in the Midwest. My question is...are we in a meteorite 
drought (falls)here in the US and elsewhere, or is their no one out 
there doing what Nininger did when a fireball is witnessed? Obviously it 
takes lots of people interested in finding them to eventually bring them to 
someone like a Nininger...who advertised in papers, spoke to groups and 
individuals, offering money, etc.

I knowwe've had sightings...but I think the last 
recorded meteorite falls in the US were Portales Valley and Monahans in 
1998. Can anyone come up with a later one? I think we are in a 
drought. Let's hope this is the year we see another or two...and of course, 
it happens in the backyard of someone on the list.

When


John


Re: [meteorite-list] Oriented specimens (ad)

2003-02-15 Thread John Divelbiss
Michael,

Thanx for offerings. The 23g Gao nose cone is extraordinary. The frothy
crust on the back side looks so light and fluffy.  I am impressed...but it
is out of my league ($).

Thanx again for sharing these beauties.

John


- Original Message -
From: Michael L Blood [EMAIL PROTECTED]
To: David Hardy [EMAIL PROTECTED]; meteorite list
[EMAIL PROTECTED]
Sent: Saturday, February 15, 2003 9:53 PM
Subject: [meteorite-list] Oriented specimens (ad)


 Hi Dave, Tom, John  anyone else lurking...
 I offered some oriented gaos yesterday. Bernd jumped on the
 smallest one only 2 minutes ahead of Martin Horejsi - but the best
 ones are still available -though larger/therefore more expensiv, not
 to mention the best one that is world class - really must be seen from
 the side and the back to appreciate its fabulous form.
 the other stuff is available, too, though the Campo Nuevo already
 sold
 Enjoy seeing them at:
 http://community.webshots.com/album/63653814KknwSz
 I would love to hear if others are as WOWed as I by the super
 oriented one.
 Best wishes, Michael

 on 2/15/03 5:25 PM, David Hardy at [EMAIL PROTECTED] wrote:

  sure is quiet!
 
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   - Friedrich Nietzsche
 --
 Worth Seeing:
 -  Earth at night from satelite:
 http://antwrp.gsfc.nasa.gov/apod/image/0011/earthlights_dmsp_big.jpg
 - Interactive Lady Liberty:
 http://doody36.home.attbi.com/liberty.htm
 - Earth - variety of choices:
 http://www.fourmilab.ch/earthview/vplanet.html
 --
 Cool Calendar  Clock:
   http://www.yugop.com/ver3/stuff/03/fla.html
 --
 Michael Blood Meteorites  Didgeridoos for sale at:
 http://www.michaelbloodmeteorites.com/




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Re: [meteorite-list] NWA 753

2003-02-12 Thread John Divelbiss
Mark,

Your ideas sound reasonable. I have yet to consider this level of
protection. Pieces like 753 go in membrane boxes for me...which are somewhat
protective. However, the relative lifespan for all things in this earthly
environment is a matter of decay. Some meteorites will go faster than
others. Hopefully it takes more than a few generations. Remember, a lot of
these things (finds) have been around for awhile already. Just keep them
away from moistureand from Nantans and Brahins and Campos and Ghubaras
and shales, etc.

John
- Original Message -
From: mark ferguson [EMAIL PROTECTED]
To: John Divelbiss [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Sent: Tuesday, February 11, 2003 11:06 PM
Subject: Re: [meteorite-list] NWA 753


 Hi John, Tom and list
 John, would a inert invironment help sabilize this
 oxidation? Like vacuum sealing them in a food storage
 bag like whats advertised on the tv? Or, for a more
 pleasing display, one of the little globes used for
 opal with the large rubber stopper back filled with
 helium (helium is easy to get from local stores which
 they fill ballons with is why I mention it). I'm
 always wondering about long term storage because, as
 you know, once something starts oxidizing, it often
 does so very quickly.
 Mark

 --- John Divelbiss [EMAIL PROTECTED]
 wrote:
  Tom,
 
  First off, many of R pieces from the desert are
  oxidized a bit.
 
  According to Rocks from Space,  these meteorites
  have very little free
  metal floating around in the makeup. Like normal
  chondrites with nickel
  iron. The metal is in the sulfide forms of
  pyrrhotite and pentlandite.  The
  iron level in the olivine is the highest among
  chondrites.
 
  All that gives this type of meteorite a higher
  rate/chance of oxidation than
  others.
 
  Hope this helps,
 
  John
  - Original Message -
  From: Tom aka James Knudson
  [EMAIL PROTECTED]
  To: meteorite-list
  [EMAIL PROTECTED]
  Sent: Tuesday, February 11, 2003 6:58 PM
  Subject: [meteorite-list] NWA 753
 
 
   Hello List, I have a slice of NWA 753. It has some
  rust colored spots
   through out the matrix. What Am I looking at? If
  it is rust, what rusted?
   Thanks, Tom
   The proudest member of the IMCA 6168
  
  
  
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Re: [meteorite-list] NWA 753

2003-02-11 Thread John Divelbiss
Tom,

First off, many of R pieces from the desert are oxidized a bit.

According to Rocks from Space,  these meteorites have very little free
metal floating around in the makeup. Like normal chondrites with nickel
iron. The metal is in the sulfide forms of pyrrhotite and pentlandite.  The
iron level in the olivine is the highest among chondrites.

All that gives this type of meteorite a higher rate/chance of oxidation than
others.

Hope this helps,

John
- Original Message -
From: Tom aka James Knudson [EMAIL PROTECTED]
To: meteorite-list [EMAIL PROTECTED]
Sent: Tuesday, February 11, 2003 6:58 PM
Subject: [meteorite-list] NWA 753


 Hello List, I have a slice of NWA 753. It has some rust colored spots
 through out the matrix. What Am I looking at? If it is rust, what rusted?
 Thanks, Tom
 The proudest member of the IMCA 6168



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[meteorite-list] Zag for $18/g?

2003-02-08 Thread John Divelbiss



Hello all,

This one looks a little fishy to me. Zag for $18/g...seller 
and bidder from France.Are we looking at a little bit of a scam, or just 
anxious bidding? Daa?

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=2156937492category=3239


John

PS I think all the other reserves were met to...by the the 
same guy with deep pockets. Da?


Re: [meteorite-list] New California meteorite

2003-02-08 Thread John Divelbiss
Rob,

Very cool find. A find with circumstances that is worthy of your gesture.
Another name could be Mojave STS-107.

Let us know how it turns out.

Thanx to you and Ron for the interesting discussions and information on
Columbia's path and debris field.

It was a  tragic day.


Regards,

John


- Original Message -
From: Matson, Robert [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Friday, February 07, 2003 4:54 PM
Subject: [meteorite-list] New California meteorite


 Hi All,

 As I reported earlier, seeing Columbia reenter this past Saturday
 was not my primary reason for being in the Mojave Desert -- I was
 actually heading up there to do some meteorite field recovery work
 for the day.  I did find one new meteorite of just over 100 grams,
 and have scanned in some images of it at the time it was found:

 http://members.cox.net/mojave_meteorites/feb1a.jpg
 http://members.cox.net/mojave_meteorites/feb1b.jpg
 http://members.cox.net/mojave_meteorites/feb1c.jpg

 And so a thought has occurred to me:  what are the chances of bending
 the Meteoritical Society rules and giving this meteorite the name
 Columbia or Columbia 7?  I checked the Catalogue, and surprisingly
 there is no meteorite called Columbia.  I would be happy to donate the
 meteorite to NASA, or alternatively arrange to have it cut into 7
 pieces to give to each of the families of the astronauts.  It's an
 ordinary chondrite, probably an H5 or H6 with some black shock veins
 running through it, so it's not particularly rare or interesting to
 researchers.  It's only claim to uniqueness was that it was found
 on February 1st at 11:44am PST, less than 6 hours after I watched
 Columbia fly by.

 Best,
 Rob


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Re: [meteorite-list] The Meteorite 'Space' - Hopefully returning some favours!

2003-01-26 Thread John Divelbiss



Hello List,

I took Jeff's offer up and presented a picture and brief story 
on the "rocks" that got me interested in meteorites. As you would find out they 
turned out to be meteorwrongs...nice ones at that. The page is in one of his 
information sections on his site. The link is below. 

http://www.meteoritesaustralia.com/space/john.html

Feel free to add the picture to your own meteorwrong 
pages.

Take care,

John

  - Original Message - 
  From: 
  Jeff Kuyken 
  To: Meteorite List 
  Sent: Saturday, January 25, 2003 7:55 
  AM
  Subject: [meteorite-list] The Meteorite 
  'Space' - Hopefully returning some favours!
  
  G'day List,
  
  There have been so many people on this list who 
  have always been there to help mewhen it was needed. Thank you to 
  everyone. Irealised after I put theunclassified meteorite page 
  together for Steven the other day, that I can probably do that for any list 
  member who has a photo etc to share but doesn'thave theweb-space 
  to do it. I've quickly put together a page tonight and called it The Meteorite 
  'Space'. It can basically be used as a FORUM FOR THE PURSUIT OF METEORITE 
  RELATED KNOWLEDGE, but will not be for advertising etc. That's what ebay is 
  for! ;-)
  
  The link is: http://www.meteoritesaustralia.com/space
  
  So feel free to keep it in mind or bookmark it 
  for future use. Hopefully Imay be able to return a few helping hands 
  I've received over the last 18 months.
  
  All the best from Australia on Australia 
  Day,
  
  Jeff KuykenI.M.C.A. #3085www.meteoritesaustralia.com


Re: [meteorite-list] Gold basin finds!

2003-01-25 Thread John Divelbiss
Tom,

Way to go Right now they are probably like chunks of gold to you. Like I
said last week...field collecting of anything makes our collections all the
more valuable to ourselves.

JD


- Original Message -
From: Tom aka james Knudson [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Saturday, January 25, 2003 8:46 PM
Subject: [meteorite-list] Gold basin finds!


 Hello List, I think today was about my 7th trip to gold basin and finaly,
 two GB's a 5.3 and 24.3. They are still out there! They both look like the
 original L4's.

 Thanks, Tom
 The proudest member of the I.M.C.A. #6168



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Re: [meteorite-list] Terrestrial rock guessing

2003-01-23 Thread John Divelbiss
This is a followup to Bob's comments in reference to guessing the types of
terrestrial rock we've seen lately on the list. By the way, I love some of
earth's finest rocks...so I do not look down at them at all...but they are
not from other planets/sources.

The site below has a list of over 1200 different rocks...staggering to think
about.

http://www.georeferenceonline.com/MineMatch/images/BGSRocks.htm

John



- Original Message -
From: Robert Verish [EMAIL PROTECTED]
To: Meteorite-list Meteoritecentral [EMAIL PROTECTED]
Sent: Thursday, January 16, 2003 2:40 PM
Subject: [meteorite-list] Terrestrial rock guessing


 Here's an interesting excerpt from John McPhee's book
 Annals of the Former World that relates to petrology
 and terminology:


http://athena.uwindsor.ca/units/leddy/2002.nsf/HelpSubjectGuidesEarthSciGlos
sary?OpenForm

 And to see how each of these various rock types relate
 to each other, take a look at this diagram:

 http://www.southalabama.edu/geography/allison/gy343/IUGS_Q_A_P.pdf

 If you would make this diagram into a dart-board and
 then pick a rock type by throwing a dart at this
 board, you would have a better than even chance of
 coming up with the correct rock type.

 ;-)
 BOb V.


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Re: [meteorite-list] oldest collector

2003-01-23 Thread John Divelbiss
Hello Al and others,

I have been at collecting for about 4 years after finding some of the most
convincing meteorwrongs you'll ever see. Someday I'll get them up on web for
you all to see. It turned out to be a rocky-like slag that had a lot of flux
in it from oldtime smelting. Melted surfaces with cupped features, ball-like
surface features that looked like chondrules, etc...might fool many early
collectors. Amigo Bob (Haag) finally gave me the bad news. I actually
studied, watched auctions, etc. for about a year before I started buying.

I wonder how many other folks start out by finding a meteorwrong? Quite a
few I would bet.

As for Arizona...I visited once in 1962...but my parents drove right by the
crater. Too bad.

John

- Original Message -
From: almitt [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Thursday, January 23, 2003 9:14 PM
Subject: Re: [meteorite-list] oldest collector


 Hi All,

 Looks like we have some old collectors out there errr.I mean
people that have
 collected for quite some time. My first collection piece was from
Meteor(ite) Crater
 in the 1960's. Probably 1965 or 1966. Went to the crater as a kid. They
sold Canyon
 Diablo Meteorite oxide (shale) on a card. I still have the cards which are
purple,
 reddish in color and say From Outer Space showing a meteor in flight
with the oxide
 glued in the center of the fireball. It has information about the impact
on the back.
 I can't say that I really got serious about collecting until the 1980's
though. I did
 make an effort to obtain a iron meteorite from Meteor(ite) Crater in 1979
but they
 didn't like the idea of selling iron meteorites to just anyone, so I
settled for a
 larger chunk of iron oxide which I still have in my collection. After that
I got
 serious. Thank-you Robert Haag! Also Thank-you Blaine Reed!

 John Sinclair wrote about the attractions around Tucson. I agree with him
on all of
 his well suggested places. One such place he mentioned was Tombstone and
the shoot out
 at the O.K. Corral. There was also another infamous shoot out at that
location (1996?)
 which another list member no doubt has not soon forgot :-)

 --AL Mitterling


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Re: [meteorite-list] NWA statistics as per Met.Bull 86

2003-01-17 Thread John Divelbiss
Bernd, Jeff, Mark B and others:

Once again, thank you for your help with these questions. Hopefully others
learn as much as I do...and appreciate the knowledge gained.

So the irons are gone from Africa? Maybe yet to be found in some areas?


Regards,

John


- Original Message -
From: Bernd Pauli HD [EMAIL PROTECTED]
To: Meteorite List [EMAIL PROTECTED]
Sent: Friday, January 17, 2003 11:39 AM
Subject: [meteorite-list] NWA statistics as per Met.Bull 86


 Norbert wrote:

  There are more than a thousand
  L's and H's just from NWA ...

 Classified H chondrites:   156
 Classified L chondrites:   146
 Classified LL chondrites:  044
 Classified C chondrites:   022
 Classified R chondrites:   007
 Classified achondrites:037
 Classified iron meteorites:005

 Provisional listing of NWAs:

 H chondrites:   213
 L chondrites:   249
 LL chondrites: 068
 C chondrites:   033 (this includes D. Bessey's CR2s)
 R chondrites:   003
 Achondrites:020
 iron meteorites:001

 Let me remind you once more that I am only mentioning
 NWA designations in this breakdown - not all the other Hot
 Desert meteorites from Oman, Lybia, Algeria, and those
 that have a real name like Tafassasset etc.

 Let me also remind you that the provisional overview is
 at least 6 months or even one year old. Numbers will have
 increased dramatically in the meantime.

 Best regards,

 Bernd

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Re: [meteorite-list] New Iron Meteorite Finds

2003-01-16 Thread John Divelbiss



Norbert, Mark and list,

Thestatistics/estimates suggest somewhere near 86% of 
all falls are chondrites...achondrites make up 7%, iron meteorites make up 6%, 
stony-irons have the final 1%.

Not to many pallasites or mesosiderites... anywhere. 


Do the NWA numbers suggest a higher number (%) for the stone 
totals, and less for irons and stony-irons? Seems that way. Does anyone know (or 
even an idea) about this information?

John

  - Original Message - 
  From: 
  Mark Miconi 
  To: ROCKS ON FIRE 
  Cc: [EMAIL PROTECTED] 
  
  Sent: Thursday, January 16, 2003 11:14 
  PM
  Subject: Re: [meteorite-list] New Iron 
  Meteorite Finds
  
  Norbert,
  First Nice website.
  
  Second and maybe you or someone on the list can 
  answer this as it is along the same lines as your question regarding 
  Irons.
  
  Why are there no stoney meteorites found in 
  Australia? If there have been Stoney Meteorites found there, what is the ratio 
  of Stoney to Iron?
  
  I have been on the list for 3 years now and can 
  not remember seeing any stoney meteorites being sold that came from 
  Australia.
  
  Thanks in Advance
  
  Mark M.
  Phoenix AZ
  
- Original Message - 
From: 
ROCKS ON FIRE 
To: [EMAIL PROTECTED] 

Sent: Thursday, January 16, 2003 3:34 
PM
Subject: [meteorite-list] New Iron 
Meteorite Finds
Hello, List,does anyone know about how many new 
irons have been found recently compared to stony meteorites? 
It occurs to me that the market gets flooded with new chondrites every 
day but hardly any new iron, nut to mention stony irons. There are more than 
a thousand L's and H's just from NWA, I guess.It seems to me that apart 
from Campo and Nantan (yes, Sikhote and Brahin too) that stuff is getting 
rare. And it shows such nice etching pattern!
-- 

Best regards from DOWN-UNDER,Norbert  Heike 
Kammel  ROCKS ON FIRE   
IMCA #3420www.rocksonfire.com  


Re: [meteorite-list] please please see this

2003-01-15 Thread John Divelbiss
Mohamed and Matteo,

It looks igneous to me...quartz or pyroxene crystals being the main mineral.
Black mineral maybe magnetite...or a amphibole or a mica.

Mohamed...question...does it attract to a strong magnet? If so, probably the
black is magnetite.

Regards,

John



- Original Message -
From: M come Meteorite Meteorites [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Wednesday, January 15, 2003 11:20 AM
Subject: Re: [meteorite-list] please please see this


 .the matrix is similar to the quartz, and
 probably is terrestrial material. opinions from
 others?
 Regards

 Matteo

 --- M Yousef [EMAIL PROTECTED] wrote:
 
  PLEASE SEE THIS:
 
  http://www.alifyaa.com/meteorite/pln/
 
 
  Sincerely
 
  Mohamed H. Yousef
  --
 
 
 
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 =
 M come Meteorite - Matteo Chinellato
 Via Triestina 126/A - 30030 - TESSERA, VENEZIA, ITALY
 Email: [EMAIL PROTECTED]
 Sale Site: http://www.mcomemeteorite.com Collection Site:
http://www.mcomemeteorite.info
 International Meteorite Collectors Association #2140
 MSN Messanger: [EMAIL PROTECTED]
 EBAY.COM:http:[EMAIL PROTECTED]/

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[meteorite-list] Re: [meteoritecollectorsassociation] Meteorite or Meteorwrong Display

2003-01-15 Thread John Divelbiss
David,

Sounds like a great way to get out the message. Like most of us, I have done
a little meteorite sharing with classrooms, co-workers,  and scouts. I
always get the feeling that I'm one of just a few people that have a clue
about what meteorites are. While popular like never before, the number of
people with the general knowledge is very limited.

As David said, we are the ones that need to share the information with
others. Way to go Dave!

John

PS Bringing a scope with a polarizer (if not too expensive) can be great way
to blow their minds. Or buy a hand held one.

- Original Message -
From: David Freeman [EMAIL PROTECTED]
To: meteorite collectors association
[EMAIL PROTECTED]; meteorite-list
[EMAIL PROTECTED]
Sent: Wednesday, January 15, 2003 7:57 PM
Subject: [meteoritecollectorsassociation] Meteorite or Meteorwrong Display


 Dear Listees;
 As you have recently seen on the list, there is always someone needing
 more information on meteorwrong and meteorite identification.   I have
 just taken some of my meteorites (meager small things that they are) and
 some of my beautifully classic meteorwrongs (massive magnetite, 3 pound
 steam locomotive clinkers, ironized sandstone nodules) and some neat
 books, Cosmos by Sagan, Rocks From Space, O. Richard Norton, Bob Haag's
 Catalogue of Meteorites and put them in a very nice display case at the
 local library.  Of the 30 or so rocks in the case, 8 are meteorites, the
 rest are great examples of close-to-be examples of meteorites.  The
 small contest is to guess the correct number of real meteorites.  Prize
 is a small slice of Gibeon.
 I will be speaking this coming Tuesday evening at the library about
 meteorites and even identifying samples that are brought in.
 The two local newspapers will be running feature articles and even a
 photo or two.
 For all of you out there in meteorite land, there is a great deal of
 inter satisfaction  related to giving back to one's community by doing
 things like this little show and tell display and public meeting.  I
 encourage all who are looking for something to do this winter to get
 involved...and maybe get a shot at brokering a new meteorite find, or
 helping out with a new strewnfield documentation...or just letting
 adults act like kids when they get to hold a real meteorite.
 It is great fun, and kids have eyes as big as grapefruits when they hold
 a real meteorite in their hands.  Try your favorite library.  I spent
 forty-five minutes and have a better looking and more functional display
 than the traveling NASA display presently at the same library.
 Their flier says Meteorites are magnetic  So, I have a nice piece of
 lodestone with some paper clips on it to confuse those lucky meteorite
 guessers, lots of fun for all.
 Very best,   71 degrees presently, and clear in Tucson
 Dave Freeman

 Apply your mind to at least one problem which has never been solved,
 which in general is considered impossible of solution, but which, being
 solved, would help humanity.  Do with your life something that has never
 been done, but which you feel needs doing...Harvey Harlow Nininger


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[meteorite-list] Genuine meteorite?

2003-01-15 Thread John Divelbiss




Does anybody have any information on the Genuine meteorite 
from Japan?It's not in my information. Just curious...

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=2153745214category=3239

John (:}


Re: [meteorite-list] More on NWA 753 and NWA 978

2003-01-13 Thread John Divelbiss
Bernd, Mark and Dean,

Thank you for your responses on NWA R-chondrites. My comparison is that my
two slices of 978 looks a lot fresher than my two 753 slices and one
individual, which are more oxidized (orange colored) than the 978 I have.
The chondrules appear to be rounder and smaller too in the 978. The 782 and
800 ones are also relatively fresh looking, but to me they look different
from 753 and 978. The 978 and Dean's latest material look alike by my
comparisons, and yes Bernd they have light colored chondrules in a greyish
black matrix that is like looking into the milky way.  Very nice material.
The new piece from Dean had a fair amount of white caliche on the exterior,
but the interior is fresh looking.

The price of these R meteorites ($7 to 20/g), along with Allende($4 to 5/g),
Bilanga ($12 to 18/g), Gao ($1 +/-), Zag ($0.50 to $2/g), SA ($0.30 to
$1.00/g) offer some of the best deals out there right now for great falls
and finds. What a time to build a collection.

John
- Original Message -
From: Bernd Pauli HD [EMAIL PROTECTED]
To: Meteorite List [EMAIL PROTECTED]
Sent: Monday, January 13, 2003 3:15 PM
Subject: [meteorite-list] More on NWA 753 and NWA 978


 Bernd Pauli HD schrieb:

  NWA 753 is a R3.9 rumurutiite chondrite,
  NWA 978 is classified as an R3.8 chondrite

 Hello again,

 I just looked at my two little NWA 753 chondrites
 from Jim Strope and Michael Blood and compared
 them to my NWA 978 endcut from the Hupés. My
 personal observation is that the chondrules in 753
 are a bit larger and slightly oval, whereas they are
 smaller in my beautiful 978 endcut. Moreover, my
 NWA 978 has a slightly cloudy texture (you might
 also call it a dark-light structure which somehow
 reminds me of the Milky Way at night with the
 unaided eye :-)

 Best regards,

 Bernd

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Re: [meteorite-list] marjalahti pallasite..... yada yada yada

2003-01-12 Thread John Divelbiss
Elton, Rosie, Steve and others,

This is a tiresome subject.

Rosie you were right on target last week when discussing  the attitude of
Steve who seems to often be offering his mine is better than yours
attitude, and again today when you commented on Elton's attempt to lead
Steve to better deals. I would have to say the number of willing traders
out there is shrinking by the day. The approach taken by Steve is brash and
irritating. The rumors of some of these dealings are not surprising. I'm
sure a book could be written about them all but who would want to read it. I
think he even dreams of  such a book. No fame will come from the approach
taken.

Steve, you should treasure your collection a little more. The revolving door
approach demonstrates that these things are nothing more than badges to
you...and we have the problem of having to experience your presentations
with each new wonder...it is not appealing to me or most others I would
suspect. I understand the idea that these are like cash, and trading is one
of our options as collectors. But you seem to have developed a new method.

Steve, I think you might be surprised at how many awesome, intact (for the
most part) meteorite collections that are out here. Many awesome specimens
that were acquired at a great price or through a great deal.

Here is to the true collectors. Here is to field collecting of any
kind...that is where your mind begins to treasure what discovery and
collection is all about. Everyone should do both if they can. I would not
trade many of my personal earthy finds...even for a slice of marjalahti.

Well, to all those going to Tucson...have a safe and enjoyable trip, and
hopefully get along with each other. I would love to be there to meet all of
you, including Steve. But I'll remain back east dreaming of Gold Basin and
the rest of the show. Report in please.

As suggested by others:   Steve...it is time to lay low and cool it...both
here on the list, in your dealings and in Tucson.

This is a tiresome subject.

John Divelbiss
Herman-75

IMCA 2006

- Original Message -
From: Rosemary Hackney [EMAIL PROTECTED]
To: E.L. Jones [EMAIL PROTECTED]; STEVE ARNOLD [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Sent: Sunday, January 12, 2003 2:37 PM
Subject: Re: [meteorite-list] marjalahti pallasite. yada yada yada


 Elton... neither do I understand.. I do not know how  rare is defined.
 They are all rare to me... shrugs.

 Sometimes ... my suspicious feminine nature takes over.. and then I think
 strange ideas...but.. it seems to me...it is a way of flaunting a new
 acquisition without coming out and saying.. I have this and you don't...
 neener neener.
 I have friends in high paces.. and you don't. or..  Am I   stud or
what?

 Just crazy Rosie ramblings as I said..  sheesh maybe he really means to
 trade. But when I tried... it never worked out.

 Rosie
 - Original Message -
 From: E.L. Jones [EMAIL PROTECTED]
 To: STEVE ARNOLD [EMAIL PROTECTED]
 Cc: [EMAIL PROTECTED]
 Sent: Sunday, January 12, 2003 11:24 AM
 Subject: Re: [meteorite-list] marjalahti pallasite. yada yada yada


  Would you;
  1) define rare  or are you fishing?


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[meteorite-list] NWA R-chondrite pairings

2003-01-12 Thread John Divelbiss



Hello all,

On to new subject.

Can anyone tell me if any of the different numbered NWA 
R-chondrites are paired? Like NWA 753 and 978, both R3.8's...and also NWA 782 
and 800...both R4.0.  Along with Ouzina...also a R4.0. 

The reason I asked isbecause I was oneof the 
curious torecently buy a "non-magnetic" NWA meteorite offering from Dean. 
I received it this weekend and it looks just likea fresh slice of 978 I 
got from the Hupes. Very nice...but unclassified I suppose.

Just curious about pairings...maybe it is not known and yet to 
be studied,


John 


Re: [meteorite-list] Off subject... List member crossing the threshold!

2003-01-03 Thread John Divelbiss
Norbert,

Congratulations...I'll have to send a gift. Something greenish brown, cold
and hard.

What did we get for a present, honey?...We got a rock.

Best Wishes,

John

- Original Message -
From: Dave Schultz [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Friday, January 03, 2003 9:46 PM
Subject: [meteorite-list] Off subject... List member crossing the threshold!


   I`ve heard from a very reliable source that List
 Member and IMCA Member Norbert Classen will be
 crossing the threshold on Saturday, January 4th.!
 Let`s all send a congratulations to him and his new
 bride, but please no rice throwing!!! Congratulations
 and good luck to the new Mr. and Mrs. Norbert
 Classen!!!
  Dave Schultz

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[meteorite-list] sunday night auctions

2002-12-21 Thread John Divelbiss



Hello all,

I have 4 nice combination thin sections andslices for 
sale on Ebay that are due to finish Sunday night (my time in PA). Three of them 
are very old terrestrial samples including olivine gabbro, hypersthene 
(orthopyroxene) and peridotite, which represent some of earth's close cousins to 
achondrites. They are very nice andcan be usedformaking 
comparsions to achondrites, and for practicing mineral identification. 


The fourth combination is a nice section/slice of NWA 
904...made from an end section I purchased from the Hupe's. It is a unique 
meteorite as you all know. 

These were all made bythe same person who prepares Jeff 
Rowell's.All of these sections have covers.

See them at. http://members.ebay.com/aboutme/herman-75/

Thanx for reading,

John


Re: [meteorite-list] sunday night auctions

2002-12-21 Thread John Divelbiss



I meant an end piece of 904, not an endsection...blah, 
blah, blah.

roger and out,

JD

  - Original Message - 
  From: 
  John Divelbiss 
  To: [EMAIL PROTECTED] 
  
  Sent: Saturday, December 21, 2002 7:48 
  PM
  Subject: [meteorite-list] sunday night 
  auctions
  
  Hello all,
  
  I have 4 nice combination thin sections andslices for 
  sale on Ebay that are due to finish Sunday night (my time in PA). Three of 
  them are very old terrestrial samples including olivine gabbro, hypersthene 
  (orthopyroxene) and peridotite, which represent some of earth's close cousins 
  to achondrites. They are very nice andcan be usedformaking 
  comparsions to achondrites, and for practicing mineral identification. 
  
  
  The fourth combination is a nice section/slice of NWA 
  904...made from an end section I purchased from the Hupe's. It is a unique 
  meteorite as you all know. 
  
  These were all made bythe same person who prepares 
  Jeff Rowell's.All of these sections have covers.
  
  See them at. http://members.ebay.com/aboutme/herman-75/
  
  Thanx for reading,
  
  John


Re: [meteorite-list] Meteor-doubtful

2002-12-18 Thread John Divelbiss
Rob and Frank,

Rob...you're not convinced?

The Hugh comment was great Frank.

I've heard of imaginary deer and bunnies running out in front of crashing
cars, etc. But have you ever heard of a meteorite being blamed for the barn
being blown up by the recipe still?

JD


- Original Message -
From: fcressy [EMAIL PROTECTED]
To: Matson, Robert [EMAIL PROTECTED];
[EMAIL PROTECTED]
Sent: Wednesday, December 18, 2002 8:03 PM
Subject: Re: [meteorite-list] Meteor-doubtful


 But Rob,
 It was still warm after being in the ground for three weeks!! And it made
a
 hole as big as Hugh and we all know what a large person Hugh was. (I'm
sure
 this is what they meant when they said it made a hugh hole). You sure
this
 doesn't warrent a road trip to Sacramento??

 Frank ;-)

 - Original Message -
 From: Matson, Robert [EMAIL PROTECTED]
 To: [EMAIL PROTECTED]
 Sent: Wednesday, December 18, 2002 4:07 PM
 Subject: [meteorite-list] Meteor-doubtful


  Hi All,
 
  http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=2900909851
 
  The story says it all.  And yet someone is willing to throw $100 at
  it... No exact mass, no mention of being attracted to a magnet, and
  only one low-resolution image.  But $100 was enough to meet the
  reserve...
 
   --Rob
 
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[meteorite-list] new sections including NWA 904

2002-11-23 Thread John Divelbiss



Hello, 

I just finished listing 5 new covered thin sections on ebay. 
These were made from my material through Jeff Rowell. The five includes NWA's 
787, 869 and 904. Also there is a nice Bilanga section, and one of my new 
terrestrial gabbro sections, which looks something like your favorite 
eucrite.

My about me page has the list. See below.

http://members.ebay.com/aboutme/herman-75/

Regards,

John


[meteorite-list] ebay auction for 98375 should be 98175 (and my other faux pas...)

2002-11-16 Thread John Divelbiss



Hello all,

One of my auctions was just questioned and it turns out that I 
have a (meteorite list) faux pas on ebay, for the following item:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=736303525

It is not Sahara 98375, but 98175...and still a LL3.5. 
(Thanxto Michael Masse for questioning it)

I will add note to auction (or relist) for those not on the 
list.

I suppose this one, and my weekly listings of related 
terrestrials makes two this week...faux pas(s) that is. Please don't blast 
me...I'm just trying to get the group and others to consider some of the 
terrestrials to be close cousins to the achondrites of other 
planetoids.It's a kin to pork, "the other white meat". I really am 
interested in sharing, and ofcourse make a couple bucks($) to offset my 
expensive hobby, meteorites. I work very hard at rock hounding these terrestrial 
specimens. I go through a lot of rock before I find whatI'm looking 
for.

Look for more goodies including some great thin sections in 
the coming weeks. I will list in the ebay area that gets the most hits over 
time. To date, fellow meteorite collectors make up over half my buyers of this 
material. 

Regards,

John


Re: [meteorite-list] Interesting breccias

2002-11-15 Thread John Divelbiss
Matt,

LL3.5, and L5 or LL5 (would say 6 but I see a number of nice chondrules in
it too).  Very nice material.

John
- Original Message -
From: Matt Morgan [EMAIL PROTECTED]
To: Meteorite-List [EMAIL PROTECTED]
Sent: Friday, November 15, 2002 12:59 AM
Subject: [meteorite-list] Interesting breccias


 Thought some of you who enjoy brecciated meteorites, may like these
 guys...any guesses as to their petrologic types?
 http://www.mhmeteorites.com/images/nwa_breccia.jpg
 http://www.mhmeteorites.com/images/nwa_breccia2.jpg
 ===
 Matt Morgan
 Mile High Meteorites
 http://www.mhmeteorites.com
 PO Box 151293
 Lakewood, CO 80215 USA
 FAX: 303-763-6917


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Re: [meteorite-list] MUNICH 2002

2002-11-12 Thread John Divelbiss
Mauro,

Great pictures...a real treat.  If we didn't know any better, the Gujba and
Taza pictures look like something from outerspace...

Thanx for sharing,

John


- Original Message -
From: Mauro Ianeselli [EMAIL PROTECTED]
To: Meteorite List [EMAIL PROTECTED]
Sent: Tuesday, November 12, 2002 3:25 PM
Subject: [meteorite-list] MUNICH 2002


 Hello list,

 I put some pictures of the Munich Show 2002 (Mineralientage 2002) on
 Yahoo Photos ( http://photos.yahoo.com/mauroianeselli ).
 You can see the new Neuschwanstein fall (the original and a copy made by
 Dieter and Gabriele Heinlein - Dieter, I hope to see you next year!),
 meteorites from BrunoCarine, the new Tabelbala (HOW) from Achmed Pani,
 some pieces of lunar  martian, how and acap (Mo's Meteorites).
 I met Mike Farmer and Jim Strope at the stand of Peter Pittman and
 Sergei Afanasiev. Siegfried Haberer had some nice pieces, I saw the
 gorgeus meteorite that you can see in the front page of the last issue
 of METEORITE and a beautiful (some kilos) carbonaceus chondrite.
 Some nice pieces at the stands of Christian Stehlin (Abraxas), Labennes,
 Rocks on Fire (Norbert  Heike Kammel) and Eric Haiderer.
 Nice show, I hope to see more dealers next time and I hope that my
 friend Matteo Chinellato will come at the 2003 show!
 Enjoy!

 Mauro

 --
 ***
 Mauro Ianeselli
 [EMAIL PROTECTED]
 International Meteorite
 Collectors Association
 IMCA #2122

 Associazione Astrofili Trentini
 www.mtsn.tn.it/astrofili
 ***


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Re: [meteorite-list] Asteroid Color Clans

2002-11-07 Thread John Divelbiss
EP,

Your scenario is along the lines I was thinking, but the evidence to support
it seems limited at this time. In time we will learn more I'm sure.

As you and others may have noticed, I do not mind exposing my ignorance on a
given subject. Doing so opens up the possiblilty of someone else teaching me
something new, or as you have done...provoke more thinking. Especially on a
subject like this that does not have clear cut answers at this time. Even a
low IQ guy like me can help all of us to think more about a given subject,
which hopefully leads to bringing enlightenment to all of us. My favorite
line in my work is that I'm dumber than a rock (or meteorite) until I get
it. That applies to rocks from space.

Thanx  EP for adding to the discussion.  Bernd...what say about all this?

John

PS I still think mesosiderites are just impact melts...different process
(molten collision versus solid collision) maybe, but still an impact formed
texture of stone and metal. Why label it a stoney-iron???  Looks like
Portales Valley and some IMB's should be called stoney iron too. H...
there I go again exposing myself to the world.

- Original Message -
From: E.P. Grondine [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Thursday, November 07, 2002 6:26 PM
Subject: Re: [meteorite-list] Asteroid Color Clans


 Hi all -

 It seems to me that instead of the meteorite classes
 being tied to one particular asteroid, it is more
 likely that ultimately the classes of meteorites (and
 some sub-classes not yet separated out) will be tied
 to classes of asteroids.  In other words, in this
 particular case the source may not necessarily Vesta,
 but a Vesta-like asteroid.

 If there are classes of asteroids, and my guessis that
 it will turn out that there are, then you get into the
 differentiation problem and the problem of parent body
 size.

 Wild stuff, but that's how I think this is going to
 play out.  Hopefully someday soon we'll probably see a
 telescope actually placed within the asteroid belt
 and we'll know the true state with certainty.

 ep


 --- John Divelbiss [EMAIL PROTECTED]
 wrote:
  Hi Al,
 
  Great stuff Al. As always, thank you for responding
  to my question and
  comments. You guys are going to force me back into
  the books to see what I
  read, but obviously didn't learn.
 
  As I remember it, the evidence with Vesta has to do
  with the large gouge
  in it's side that shows different levels of crust
  (eucrite) and sub crust
  (diogenite). This leads to another challenge or
  question, if we think all
  or most of HED's come from Vesta, then why do they
  look so different from
  each other?. Some eucrites are white or grey, while
  others are a shade of
  light brown/yellow. The differences in diogenites
  are even greater. Is the
  new olivine diogentite thought to be from Vesta
  also?
 
  My answer would be they sure could be. My
  experience in finding plutonic
  rocks here on earth is that the same area of
  exposure searched can have a
  wide variety (in appearance) of same type type rock.
  Some are more rich in
  one mineral than another...but for the most part
  still made up of the same
  ingredients. Temperature and pressure of the magma
  at one location versus
  another precipitates out minerals at different
  rates. Also the makeup of the
  magma then changes as it losses more of one element
  than others, changing
  the resulting rock formation mineral ratios.  I
  think I answered my own
  question, but I'M WAY OVER MY HEAD HERE!!!
 
  HELP.John
 
 
 
  - Original Message -
  From: almitt [EMAIL PROTECTED]
  To: John Divelbiss [EMAIL PROTECTED]
  Cc: Bernd Pauli HD
  [EMAIL PROTECTED]; Meteorite
  List
  [EMAIL PROTECTED]
  Sent: Tuesday, November 05, 2002 1:23 AM
  Subject: Re: [meteorite-list] Asteroid Color Clans
 
 
   Hi John,
  
   I'll take a stab at this but Bernd really has
  great resources for
  answering this no
   doubt better than I can. The topic that Bernd had
  started was on asteroid
  color clans
   and that at least 90 percent of asteroids are
  associated with families
  (from
   collisions in the past). No doubt the Vesta HED's
  are from chunks broken
  off from
   Vesta in an impact and that have made their way
  into an orbit that upon
  further impact
   has allowed meteoroids to end up in some of the
  kirkwood gaps where they
  can be
   purbatrated into Earth crossing orbits. Yes they
  are from other sources
  but they
   originated from the same source or asteroid. No
  doubt this is true for the
  other
   related asteroid family groups and again the color
  clans that they are
  beginning to
   piece together with the new research.
  
   I don't know if we can say for sure or not if a
  certain meteorite is from
  a particular
   asteroid chunk or fragment but there is very
  strong evidence to show the
  HED's are
   indeed from Vesta and also a strong link of the H
  type chondrites to
  asteroid Hebe. I
   don't think

Re: [meteorite-list] Asteroid Color Clans

2002-11-05 Thread John Divelbiss
Hi Al,

Great stuff Al. As always, thank you for responding to my question and
comments. You guys are going to force me back into the books to see what I
read, but obviously didn't learn.

As I remember it, the evidence with Vesta has to do with the large gouge
in it's side that shows different levels of crust (eucrite) and sub crust
(diogenite). This leads to another challenge or question, if we think all
or most of HED's come from Vesta, then why do they look so different from
each other?. Some eucrites are white or grey, while others are a shade of
light brown/yellow. The differences in diogenites are even greater. Is the
new olivine diogentite thought to be from Vesta also?

My answer would be they sure could be. My experience in finding plutonic
rocks here on earth is that the same area of exposure searched can have a
wide variety (in appearance) of same type type rock. Some are more rich in
one mineral than another...but for the most part still made up of the same
ingredients. Temperature and pressure of the magma at one location versus
another precipitates out minerals at different rates. Also the makeup of the
magma then changes as it losses more of one element than others, changing
the resulting rock formation mineral ratios.  I think I answered my own
question, but I'M WAY OVER MY HEAD HERE!!!

HELP.John



- Original Message -
From: almitt [EMAIL PROTECTED]
To: John Divelbiss [EMAIL PROTECTED]
Cc: Bernd Pauli HD [EMAIL PROTECTED]; Meteorite List
[EMAIL PROTECTED]
Sent: Tuesday, November 05, 2002 1:23 AM
Subject: Re: [meteorite-list] Asteroid Color Clans


 Hi John,

 I'll take a stab at this but Bernd really has great resources for
answering this no
 doubt better than I can. The topic that Bernd had started was on asteroid
color clans
 and that at least 90 percent of asteroids are associated with families
(from
 collisions in the past). No doubt the Vesta HED's are from chunks broken
off from
 Vesta in an impact and that have made their way into an orbit that upon
further impact
 has allowed meteoroids to end up in some of the kirkwood gaps where they
can be
 purbatrated into Earth crossing orbits. Yes they are from other sources
but they
 originated from the same source or asteroid. No doubt this is true for the
other
 related asteroid family groups and again the color clans that they are
beginning to
 piece together with the new research.

 I don't know if we can say for sure or not if a certain meteorite is from
a particular
 asteroid chunk or fragment but there is very strong evidence to show the
HED's are
 indeed from Vesta and also a strong link of the H type chondrites to
asteroid Hebe. I
 don't think there is much doubt about the Mars type meteorites (SNC's) are
from Mars
 and the Lunar meteorites are from the moon as we have been there and have
material to
 compare to. With the color clans coming into play we can at least say that
certain
 meteorites are from certain families now.

 On a related note Mar's moon Phobos is very similar to the CV3's like
Allende but
 there are also many other asteroids out there with that spectral match
(could it be
 the same clan?) I have always thought with the larger crater I see in the
photos taken
 by NASA that Phobos was a good candidate for that source material.

 Another question or comment. Perhaps some of the meteorites of different
classes
 sample the same asteroid (or family, clan). We could have iron meteorites,
pallasites
 and chondrites or achondrites all from the same parent body but we are
looking at
 different depths of material all from the same parent body or asteroid
family clan.
 This is no doubt true of the meteorites we have from Vesta and shows
material from
 different depths. My best!

 --AL

 John Divelbiss wrote:

  Hi Al, Rob, Bernd and others,
 
  I think it is wonderful to think we can match types with asteroids that
are
  labeled and watched.
 
  I have a question. Is it safe to say that what we are doing is matching
  spectrums of types with those same specturms for a given asteroid, but
not
  necessarily committing to say that is probably from that asteroid. In
other
  words, their maybe(must be) several to hundreds of a given type asteroid
out
  there. And that one LL4 could come from one rock, and another from a
  different rock with the same spectrum on the opposite side of the belt.
I
  maybe stating the obvious, but for instance I so often read that an HED
is
  probably from the asteroid Vesta, when in truth it maybe from another
one.




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[meteorite-list] meteorites and rocks for sale

2002-11-04 Thread John Divelbiss



Hello All,

This is my first shameless plug for a listing of goodies for 
sale and due tomorrow night on ebay. Tonight will be the long version. The list 
has a couple meteorite slices including Gao, Dhofar 007 and NWA 904. http://members.ebay.com/aboutme/herman-75/ 


I've also added some nice earthly material 
(olivinegabbro) which I liken to achondrites such as shergottite and 
diogenite.I'velisted a few slices that are a cheap version of a nice 
slice ofthe good stuff. I know many of you could care less about such 
material, but I feel compelled to share what I think is great study material. 
Especially when comparing to achondrites.Based on its location in the 
field, this material isprobably ancient ocean bedrock from the 
Pre-Cambriantime period, and maybe over a billion years old.I would 
like to think if we ever find meteorites on the moon from earth, it would be 
material similar to this. I also have listeda piece of magnetite rich 
gneiss (iron ore) which is stongly attracted to magnets. In the future I will 
also have more meteorites, thin sections of meteorites and gabbros, etc, and 
other types of earthly finds from the same area including peridotite, 
serpentenite, hypersthene-magnetite rich material, gneiss(es), etc. If any of 
you are interested in getting some of this great earthly material, contact me 
and I'm sure I could fix you up fora small price plus shipping. All of the 
material was field collected by me. Take care and thanx for 
reading.

John Divelbiss
Reading, PA

IMCA 2006


Re: [meteorite-list] Asteroid Color Clans

2002-11-04 Thread John Divelbiss
Hi Al, Rob, Bernd and others,

I think it is wonderful to think we can match types with asteroids that are
labeled and watched.

I have a question. Is it safe to say that what we are doing is matching
spectrums of types with those same specturms for a given asteroid, but not
necessarily committing to say that is probably from that asteroid. In other
words, their maybe(must be) several to hundreds of a given type asteroid out
there. And that one LL4 could come from one rock, and another from a
different rock with the same spectrum on the opposite side of the belt. I
maybe stating the obvious, but for instance I so often read that an HED is
probably from the asteroid Vesta, when in truth it maybe from another one.

I've read McSween and Norton's books amoung others, but I never read/heard
it stated like I'm trying to do...poorly.

Looking for input,

John

 PS Great topic guys


- Original Message -
From: Bernd Pauli HD [EMAIL PROTECTED]
To: almitt [EMAIL PROTECTED]
Cc: Meteorite List [EMAIL PROTECTED]
Sent: Monday, November 04, 2002 12:33 PM
Subject: Re: [meteorite-list] Asteroid Color Clans


  Hi Bernd and all,

 Hi AL and List,

  HED type meteorites probably sample...asteroid Vesta
  H type meteorites probably sample  asteroid Hebe
  L4 type meteorites may sample .. asteroid Eros
  CM2 type meteorites may sample . Ceres
  Aubrites may sample asteroid 3103 . (44 Nysa)
  M type asteroids (as asteroid Psyche) some of the iron meteorites types
  A type asteroids (as asteroid Asporina) pallasite meteorite types

  and of course we have the lunar
  (is there a classification category yet?)

 There is LUN-A = lunar highland breccias (DaG 262, NWA 482)
 There is LUN-B = lunar mare basalt (NWA 032, Dho 287)

  and Mars (SNC's) meteorites

  Can anyone add other links (weak or otherwise?) I know
  there is a link to the L6's but can't find that right now.

 O.R. Norton CEM, p. 253, Fig. 11.10:

 Comparison of reflection spectra of the CR2 chondrite, Renazzo
 (solid curve), and the main belt asteroid 2 Pallas (open circles).
 The match is almost perfect ...


 Cheers,

 Bernd

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Re: [meteorite-list] Sounds of the Bovedy fall

2002-10-19 Thread John Divelbiss



Rob,

Very cool. It sounded like an L3 to me.

Thanx for sharing,

John

  - Original Message - 
  From: 
  [EMAIL PROTECTED] 
  
  To: [EMAIL PROTECTED] 
  
  Sent: Saturday, October 19, 2002 12:52 
  PM
  Subject: [meteorite-list] Sounds of the 
  Bovedy fall
  Hi List,when I returned from the States on Thursday 
  evening, there was a package waiting for me containing an audio tape of the 
  Bovedy meteorite fall. It's pretty cool, so I thought you might want to hear 
  it for yourselves.It was recorded on 25th April 1969, in County 
  Londonderry, Northern Ireland - a woman was recording bird song just as the 
  5.4kg Bovedy (L3) meteorite fell, and she caught the detonations through her 
  microphone. The booms and rumblings echo around for several seconds after the 
  first detonation, and a spooked dog starts to bark soon after (the Bovedy 
  Dog??).The fun starts at around 34 seconds into the track, which you 
  can download athttp://fernlea.tripod.com/bovedy.wavIt's always 
  nice to see what caused it, so here's a picture of my Bovedy 
  slicehttp://fernlea.tripod.com/bovedy.jpgThanks to Derek Heatly 
  and the Planetarium for the original recording!Cheers,Rob 
  Elliott.www.meteorites.uk.comFernlea Meteorites,The Wynd,Off 
  Dickson Lane,Milton of Balgonie,Fife. KY7 6PYUnited 
  KingdomTel: +44-(0)1592-751563Fax: +44-(0)1592-751991Mobile: 
  07909-773929Email: [EMAIL PROTECTED] 



Re: [meteorite-list] Tafassasset classification

2002-10-03 Thread John Divelbiss

Norbert,

Thank you...awesome response.  

John


- Original Message - 
From: Bernd Pauli HD [EMAIL PROTECTED]
To: meteorite list [EMAIL PROTECTED]
Sent: Thursday, October 03, 2002 12:06 PM
Subject: [meteorite-list] Tafassasset classification


 Norbert Classen modestly wrote:
 
  Now, I hope this helps to explain Dr. Otto's point of view, and
  the difference between type 7 chondrites and primitive achondrites.
  To me, all of this sounded more than convincing. I just hope
  that I've been able to present his view coherently in my poor
  English. And sorry for this lengthy email...
 
 E x c e l l e n t  post,
 E x c e l l e n t  English!
 
 A resounding bravo from
 your fellow countryman,
 
 Bernd
 
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Re: [meteorite-list] Tafassasset classification

2002-10-02 Thread John Divelbiss

Hello All,

Primitive is primitive!Help me to understand the differences please.

Is the argument about where the line(s) should be drawn between a chondrite
(that is really differentiated...like a 7) versus a primitive achondrite
(that is not quite differentiated enough to be called a achondrite)?

Is there really a 7 category and why?

Are primitive achondrites now considered differentiated enough to be
distinguished from a highly changed chondrite? small versus coarse grains in
matrix?

How is this line drawn? mineral makeup, level of glass, age, grain
size/changes, etc. ?

Lots of questions with this story.

Alain would have something to say about all this. Ann Black, is there a
position written from his corner?


John

- Original Message -
From: Norbert Classen [EMAIL PROTECTED]
To: Bernd Pauli HD [EMAIL PROTECTED]; Svend Buhl
[EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Sent: Wednesday, October 02, 2002 2:30 PM
Subject: AW: [meteorite-list] Tafassasset classification


 Hello Bernd, Svend, Anne, and List,

 I discussed this subject several times with my old friend Dr. Otto,
 the German researcher who did the original analysis on Tafassasset
 (Freiburg), a stone that was originally submitted to the NomCom.
 as Tenere 001, a new ungrouped primitive achondrite similar to
 Divnoe, and the brachinites. He was more than suprised that the
 paired Tafassasset (Paris) has been submitted as an equilibrated
 CR chondrite.

 He gave me several reasons for his original classification of Taf-
 Frei as a primitive achondrite, but I can't remember them all right
 now (you know, I don't have a degree in mineralogy, petrology, and/
 or cosmochemistry). But I remember his central argument: primitive
 achondrites show a more or less completely recrystallized matrix
 that looks entirely different from even highly equilibrated chondrites.
 He showed me several thin sections of various PACs, and equilibrated
 chondrites, and in fact, Tafassasset closely resembles other primitive
 achondrites, such as Divnoe, Reid 027, and Zag (b). No equilibrated
 chondrite has such a coarse grained matrix, which is a typical sign
 for recrystallization (if I got Dr. Otto right).

 There were other points in Dr. Otto's argumentation that convinced
 me of his point of view, and his view is obviously backed up by the
 research that Dr. Zipfel et al performed on Tafassasset, more recently.
 Obviously, there is some resistance to accept the fact that this nice
 meteorite is no extraordinary CR - something that has to do with
 the self importance of certain scientists that made extraordinary
 claims, but failed to provide extraordinary proofs.

 Just my two Tafs,
 Norbert


  -Original Message-
 
  Svend wrote:
 
   J. Zipfel from the MPI in Mainz says that refractory lithophiles
   fractionated compared to a typical CR composition is leading to
   a possible classification as primitive achondrite. Does anybody
   know about a final classification yet?
 
 
  Hello Anne, Svend and List,
 
  In the Abstract issue of MAPS (vol. 37-7, July 2002, p. A155),
  Jutta Zipfel et al. published an abstract re: Tafassasset. In the
  discussion part, the authors state:
 
  The figure illustrates that both samples have compositions clearly
  fractionated from CI and other chondrite groups. Tafassasset has AI/Mg
  and Mn/Mg ratios similar to other primitve achondrites, indicating
  incipient partial melting involving mobilization of SiO2 (+/- A1203,
  CaO, etc.) -, P205- and S-rich melts. Although the bulk compositions
  are heterogeneous, characteristic element signatures (e.g., low Zn,
  Mn/Mg,depletion in refractory lithophile elements)   e x c l u d e
  a relationship to CR chondrites and support pairing of Taf-Pa and
  Taf-Frei*.
 
  * Taf-Pa is the Paris material - Taf-Frei the Freiburg material
 
 
  Cheers,
 
  Bernd
 
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Re: [meteorite-list] Tafassasset classification

2002-10-02 Thread John Divelbiss

Frank,

I understand the description of the primitive achondrite...including the
types you mention.

From that statement in Nortons book, they are still chondrites...just
overdone a bit. What line did they cross to be called achondrites? And how
does it relate to Tafassasset being also called a CR7?

John

- Original Message -
From: fcressy [EMAIL PROTECTED]
To: John Divelbiss [EMAIL PROTECTED]; Norbert Classen
[EMAIL PROTECTED]; Bernd Pauli HD
[EMAIL PROTECTED]; Svend Buhl [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Sent: Wednesday, October 02, 2002 10:55 PM
Subject: Re: [meteorite-list] Tafassasset classification


 Hello John and all,
 Regarding your primative achondrite question, Norton's Encyclopedia of
 Meteorites has a page dedicated to the subject (P. 165). He states that
 primative achondrites have achondrite textures but still retain something
 of their chondritic composition. and that they are transitional between
 chondrites and achondrites. As examples of primative achondrites, he uses
 acapulcoites, lodranites and winonaites.
 Hope this helps.
 Frank




 - Original Message -
 From: John Divelbiss [EMAIL PROTECTED]
 To: Norbert Classen [EMAIL PROTECTED]; Bernd Pauli HD
 [EMAIL PROTECTED]; Svend Buhl [EMAIL PROTECTED]
 Cc: [EMAIL PROTECTED]
 Sent: Wednesday, October 02, 2002 5:05 PM
 Subject: Re: [meteorite-list] Tafassasset classification


  Hello All,
 
  Primitive is primitive!Help me to understand the differences
 please.
 
  Is the argument about where the line(s) should be drawn between a
 chondrite
  (that is really differentiated...like a 7) versus a primitive
achondrite
  (that is not quite differentiated enough to be called a achondrite)?
 
  Is there really a 7 category and why?
 
  Are primitive achondrites now considered differentiated enough to be
  distinguished from a highly changed chondrite? small versus coarse
grains
 in
  matrix?
 
  How is this line drawn? mineral makeup, level of glass, age, grain
  size/changes, etc. ?
 
  Lots of questions with this story.
 
  Alain would have something to say about all this. Ann Black, is there a
  position written from his corner?
 
 
  John
 
  - Original Message -
  From: Norbert Classen [EMAIL PROTECTED]
  To: Bernd Pauli HD [EMAIL PROTECTED]; Svend Buhl
  [EMAIL PROTECTED]
  Cc: [EMAIL PROTECTED]
  Sent: Wednesday, October 02, 2002 2:30 PM
  Subject: AW: [meteorite-list] Tafassasset classification
 
 
   Hello Bernd, Svend, Anne, and List,
  
   I discussed this subject several times with my old friend Dr. Otto,
   the German researcher who did the original analysis on Tafassasset
   (Freiburg), a stone that was originally submitted to the NomCom.
   as Tenere 001, a new ungrouped primitive achondrite similar to
   Divnoe, and the brachinites. He was more than suprised that the
   paired Tafassasset (Paris) has been submitted as an equilibrated
   CR chondrite.
  
   He gave me several reasons for his original classification of Taf-
   Frei as a primitive achondrite, but I can't remember them all right
   now (you know, I don't have a degree in mineralogy, petrology, and/
   or cosmochemistry). But I remember his central argument: primitive
   achondrites show a more or less completely recrystallized matrix
   that looks entirely different from even highly equilibrated
chondrites.
   He showed me several thin sections of various PACs, and equilibrated
   chondrites, and in fact, Tafassasset closely resembles other primitive
   achondrites, such as Divnoe, Reid 027, and Zag (b). No equilibrated
   chondrite has such a coarse grained matrix, which is a typical sign
   for recrystallization (if I got Dr. Otto right).
  
   There were other points in Dr. Otto's argumentation that convinced
   me of his point of view, and his view is obviously backed up by the
   research that Dr. Zipfel et al performed on Tafassasset, more
recently.
   Obviously, there is some resistance to accept the fact that this nice
   meteorite is no extraordinary CR - something that has to do with
   the self importance of certain scientists that made extraordinary
   claims, but failed to provide extraordinary proofs.
  
   Just my two Tafs,
   Norbert
  
  
-Original Message-
   
Svend wrote:
   
 J. Zipfel from the MPI in Mainz says that refractory lithophiles
 fractionated compared to a typical CR composition is leading to
 a possible classification as primitive achondrite. Does anybody
 know about a final classification yet?
   
   
Hello Anne, Svend and List,
   
In the Abstract issue of MAPS (vol. 37-7, July 2002, p. A155),
Jutta Zipfel et al. published an abstract re: Tafassasset. In the
discussion part, the authors state:
   
The figure illustrates that both samples have compositions clearly
fractionated from CI and other chondrite groups. Tafassasset has
AI/Mg
and Mn/Mg ratios similar to other primitve achondrites, indicating
incipient partial melting

Re: [meteorite-list] One year ago

2002-09-10 Thread John Divelbiss

Bernd, Matteo and Brothers and Sisters of this list,

One year ago our country was savagely and cowardly attacked. It was my first
experience of a so-called war that hit me close to home. I did not lose a
family member or friend, but I cried just the same. Living here in the
middle of the 3 sites of the crashes was scary. The horrors we all witnessed
were reminders to me of my grandfather's stories of the trench battles, and
the great pain and suffering of WW 1. He left us last November at 106. He
always felt war was such a waste, but yet he was very patriotic and
supported our countries efforts to stop others from creating such terror and
grief. My father's stories of WW 2 were just as disturbing...he even had
horrific pictures that a friend of his took of the concentration camps.
Vietnam is a nightmare for many. All countires involved in these wars can
attest to the horror. People can be so cruel.

Let us not forget that fateful day last year. We all have to be diligent in
our daily lives, and possibly one day have to pay the great sacrifice to
stop the evil. I am ready if such an occurrence would present itself.

John

Reading, PA
USA



- Original Message -
From: Bernd Pauli HD [EMAIL PROTECTED]
To: meteorite list [EMAIL PROTECTED]
Sent: Tuesday, September 10, 2002 5:54 PM
Subject: [meteorite-list] One year ago


 One year ago, at about four o'clock in the afternoon, I went
 online to download that day's posts. What I found was this:

  Not meteorite related / Date: Tue, 11 Sep 2001 09:25:21 -0500

  For those of you who haven't heard yet America has been attacked.
  This makes the Oklahoma bombing look like child's play. A plane
  has hit the Pentagon and one plane has hit each of the World Trade
  Center towers. One of the towers has collapsed. According to some
  news reports up to three of our commercial planes have been hijacked
  as well. Rhett Bourland

 I translated Rhett's words for my wife and she was asking me if I was
 aware of what I was translating. I said yes I was. Today I know I
 was not. Soon after, my daughter and my son-in-law arrived and we
 had to watch the abominable, nightmarish scenario that was unfolding
 before our eyes.

 I thought that I had finally overcome those woeful moments but while
 I was watching again one of those TV documentaries tonight about the
 coward attack on innocent people of every creed and every race, about
 this barbaric attack on our principles of freedom and human dignity,
 I realized that I would never be able to forget.

 There is no excuse, there is no justification, and there is no need
 to tell me it all happened because ... I grew up in post-war Germany,
 I saw black Americans give me Cadbury chocolate or chewing gum
 and candy and I still see their shining white teeth and the friendly
 expressions on their faces, I still remember GI's whom a 5-year-old
 Bernd asked in broken English: Have you money, Mister? And more
 often than not, they gave me 50 Pfennigs or even 1 German Mark, a
 huge amount of money in those days after WWII, these are the things
 I still cherish in my heart and so my heart goes out to those who
 lost loved ones on September 11, my heart goes out to America,

 Bernd

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Re: [meteorite-list] Help A Brother Out - Terminated

2002-09-10 Thread John Divelbiss

Rob,

So that we can stay in touch with your efforts, tell us (me) where and how
to keep up with the listings on Yahoo. I am not familiar with the Yahoo
list.

As for easy money, well it is not easy for most of us, especially in the
time of need. Let us be kind and not attack one another. If one cannot
afford to buy a given piece, then so be it. Rob's method of keeping things
moving right into Ebay is appropriate.

Ease up on the criticism.

John

- Original Message -
From: [EMAIL PROTECTED]
To: Mark Miconi [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Sent: Tuesday, September 10, 2002 6:32 PM
Subject: [meteorite-list] Help A Brother Out - Terminated


 As I said at the onset, and I am a man of my word, I am
 stopping the Help A Brother Out thread. Easy money?
 How about a tremendous cut in one's passion and a bunch
 of people busting their asses to help out. ONE of our 2
 Mastiffs...  sorry about your dog Mark, nice
 comparison. May your family never take ill and may you
 never be in need of my help.

 I am going to move this to one of the other lists so
 Metcent is not the posting site anymore. So, tonight I
 will post to the Yahoo meteorite lists and you can get
 them that way.

 Thanks
 Rob Wesel
 Doubting the music makers..and the dreamers right now.
  NOW I am beginning to see a trend hereMAYBE I should get in on it
before
  all the EASY money is gone!   ONE of our 2 Mastiffs is ill and I just
had to
  cough up over $400.00 to pay to get him well. He is a treasured member
of
  our family as well as providing very significant security for our home
and
  guards my small but important meteorite collection. It would be nice if
  everyone would log on to Ebay and help us out by buying one of the fine
  collectibles we have for sale. TREATING a 188 pound Mastiff is
expensive!
 
  REALLY now is this going to be happening on a regular basis? Steve my
  sympathies for your loss but it somehow does not seem right that on the
  heels of one tragedy sparked sale we now have anotherWhere will it
end?
 
  Can't this stay a list for discussion? Why does someones failure to plan
for
  the future constitute a need for the members of this list to suddenly
drop
  everything and buy something.
 
  I am truly sorry to hear of your loss but REALLY do not want to
constantly
  see SALES of collections due to someones tragediesPRETTY soon it
will be
  a car with a blown engine, or a life saving organ transplant...with
little
  or no way to substantiate whether the tragedy is genuine, not that any
list
  member would do that.
 
  Just my heartless 2 cents
 
  Mark M.
  - Original Message -
  From: Steve Arnold, Chicago!!! [EMAIL PROTECTED]
  To: [EMAIL PROTECTED]
  Sent: Tuesday, September 10, 2002 5:17 AM
  Subject: [meteorite-list] HELP PLEASE!!!
 
 
   Godd morning all. I know, I'll probably be spammed, jammed, and dammed
for
   this but I do not care. I know I recently sent to the list that I had
a
   family emergency come up, and that I decided to put up some of my
nicer
   meteorites forsale. Well you know what they are. I just want to let
you
   know that my mother-in-law died suddenly and that she has no insurance
for
   a buriel. She is also a widow. We can pay for half of the buriel, but
we
   cannot afford the other half. So I am calling out to you all, the
great
   meteorite collecters of the world, if you can help me out, i'd
appreciate
   it. You can go to my website and then go to my forsale page and see
what
   is forsale. What ever you buy, I'll ship and pay insurance world
wide!!!
   Thanks for letting me get this off.
 steve
  
   =
   Steve R.Arnold, Chicago, IL, 60120
   I. M. C. A. MEMBER #6728
   The Midwest Meteorite Collector!
   Website url http://stormbringer60120.tripod.com
  
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   9-11: A tribute to the more than 3,000 lives lost
   http://dir.remember.yahoo.com/tribute
  
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Re: [meteorite-list] Bessey comment

2002-09-07 Thread John Divelbiss



Ron and associates,


Greetings. First off, I know you have along distinguished 
career in this arena and I wish to not offend you and others who have given so 
much to this great interest of many.

My frustration is the long list of Sahara and NWA numbers that 
do not have official classifications including weights, etc. As Mark Mafer 
suggested there must be ways to help this process out by using a simpler method 
of classification for ordinary chondrites. It would not be the full blown 
method, butareduced method that at least would label/categorize many 
of the unknowns. Is that possible? Make it a special label as "probable" or 
something like that. I can make guesses, but I'm sure my accuracy would be 
poor.

I believe Dean when he says he has triedwith difficulty to get 
classifications. Maybe at this point(due to frustration) he is just passing the 
burden on to others to keep his business going. Isit a lack of effort or 
is there one big roadblock, that only opens for the achondrites and the #3 
chondrites. I don't know...but what I do know is that the list ofofficial 
meteorites is short compared to the amount of material outthere.

As for the article, yes I read it this week and it sounds very simple to 
get a #. Who would someone like mecontact, andwhatare the odds 
of getting a classification? A number withoutofficial (even if probable) 
classification is nothelpful in my opinion. I mean if I go to the trouble 
of sending in something, only to end up with a number...what is the 
point?I can label it I guess.

I will try myself in near future to get a classification on an 
unknown...and report back with my experience. 

Thanx Ron for your interest,

John

  - Original Message - - 
  Original Message - 

  From: 
  meteorite1.com 
  To: John Divelbiss ; Bernd Pauli HD ; Radosevich, Dave 
  Cc: [EMAIL PROTECTED] 
  
  Sent: Thursday, September 05, 2002 8:48 
  PM
  Subject: Re: [meteorite-list] Bessey 
  comment
  
  John Divelbiss wrote:
  I read an article written in May by fellow list 
  member Norbert Classen thatdiscusses this issue from another field 
  collectors point of view. I totallyagree and hope others will come forward 
  to help this situation out. The linkis http://www.meteorite.fr/en/news/feature.htm
  
  You will want to see my article in the Sept. 2002 METEORITE 
  TIMES (under the heading Meteorites 101) at
  http://www.meteoritetimes.com/current_issue/index.htm
  re: Update on NWA 
  Classificationswith comments from Dr. Jutta Zipfel from the 
  NomCom.
  
  This information is provided as a number of persons have 
  indicated an interest in hearing from the NomCom regarding this 
  matter.
  
  
  RonR. N. HartmanMETEORITES and MEMBRANE SUSPENSION 
  BOXES
  [EMAIL PROTECTED]www.meteorite1.com
  [EMAIL PROTECTED]www.membranebox.com
  Mailing address:The R. N. Hartman Collection 
  METEORITESP.O. Box 94Walnut, CA 91788-0094 (U.S.)
  
  
  
  
  
  
  
  
  
  - Original Message - 
  From: John Divelbiss [EMAIL PROTECTED]
  To: Bernd Pauli HD [EMAIL PROTECTED]; 
  Radosevich, Dave [EMAIL PROTECTED]
  Cc: [EMAIL PROTECTED]
  Sent: Thursday, September 05, 2002 3:42 PM
  Subject: Re: [meteorite-list] Bessey 
  comment
   Bernd, Dave and list,  I 
  concur with the comments to date. But I thought it really wasn't 
  meteorite until the "council" says it is? For now it is just a rock, 
  right.  My gut tells me that science as a whole is missing the 
  boat with the NWA's...someday the negative positions taken during 
  these times over the lack information like location, particulars of 
  find, etc. will be a mistake that can't be fixed. I know this subject 
  has had a lot of press, but from a simpletons point of view the 
  treatment of the most NWA's not being legitimate is wrong. I have no 
  clue as to the fix(es) for the problems perceived, but to "putoff or 
  shun" the likes of Dean and others to get classifications done in a 
  timely matter is a mistake. Some dealers have direct connections that 
  make this less of a problem...but they are in the minority I would 
  think. A concerted effort to improve all aspects of this problem, 
  including the availability of labs capable of doing such work should 
  be done before we lose the bulk of potential information on these 
  great rocks. It is late in the game, but not too late I would hope. 
  There are many great pieces out here that are orphaned at this 
  point...with owners wanting to know what it is.  
  Protesting not to buy or acknowledge this so called junk only 
  reinforces this stubborn position. Those doing so are adding to the 
  thick crust of the objectors...limiting science instead of improving 
  it.  From the sounds of it, fixing the problems (some real, 
  some perceived due to association) in Morocco are probably the hardest 
  to resolve...and they may never be. But once the rocks are in hand, 
  why can't the community come t

Re: [meteorite-list] Bessey comment

2002-09-05 Thread John Divelbiss

Bernd, Dave and list,

I concur with the comments to date. But I thought it really wasn't meteorite
until the council says it is? For now it is just a rock, right.

My gut tells me that science as a whole is missing the boat with the
NWA's...someday the negative positions taken during these times over the
lack information like location, particulars of find, etc. will be a mistake
that can't be fixed. I know this subject has had a lot of press, but from a
simpletons point of view the treatment of the most NWA's not being
legitimate is wrong. I have no clue as to the fix(es) for the problems
perceived, but to putoff or shun the likes of Dean and others to get
classifications done in a timely matter is a mistake. Some dealers have
direct connections that make this less of a problem...but they are in the
minority I would think. A concerted effort to improve all aspects of this
problem, including the availability of labs capable of doing such work
should be done before we lose the bulk of potential information on these
great rocks. It is late in the game, but not too late I would hope. There
are many great pieces out here that are orphaned at this point...with owners
wanting to know what it is.

Protesting not to buy or acknowledge this so called junk only reinforces
this stubborn position. Those doing so are adding to the thick crust of the
objectors...limiting science instead of improving it.

From the sounds of it, fixing the problems (some real, some perceived due to
association) in Morocco are probably the hardest to resolve...and they may
never be. But once the rocks are in hand, why can't the community come to
grips with helping all of us with the classification process.

This is my two cents. I am newbie to all this, collecting only for three
years. I'm sure many smart people out there have more insight.  But when you
break it down in my mind, the general treatment of NWA's (and other African
meteorites) is WRONG!

I read an article written in May by fellow list member Norbert Classen that
discusses this issue from another field collectors point of view. I totally
agree and hope others will come forward to help this situation out. The link
is http://www.meteorite.fr/en/news/feature.htm

Thanx for your time and forgive me if you are offended,

John Divelbiss (BL #33)
IMCA2006

PS If no one responds, that's OK with me...it has happened before.
PSS Dean, keep trying for all of us.


- Original Message -
From: Bernd Pauli HD [EMAIL PROTECTED]
To: Radosevich, Dave [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Sent: Thursday, September 05, 2002 4:31 PM
Subject: [meteorite-list] Bessey comment


 An enthusiastic Dave wrote:

  If this is the worst of the bunch then the other 39 folks
  got really really nice  specimens. My BL15 is way better than
  the photo. Mine has it all. It's oriented and shows flow lines,
  rollover edge, and plenty of thumb prints. A personal thanks to
  Dean Bessey for bringing this truly nice NWA to all of us (40).


 Hi Dave, BL-owners and List,

 Welcome to the BL-Club :-) Your description says it all! Congrats
 on this breathtaking specimen. I wanted to buy this one because of
 its relatively low weight (which saves money) but didn't like the
 horizontal scar. Oh, well ...

  I normally dont buy NWA's for reasons we have shared on this list.

 They are meteorites without a pedigree ... but does beauty need
 a pedigree? They are meteorites. They have come from the same
 places as their decent brethren   w i t h   a pedigree! My two
 Euro-cents!

 Best regards,

 Bernd (BL #18)

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Re: [meteorite-list] Beginner Questions on Meteorite Classification

2002-09-02 Thread John Divelbiss



Mark,

If you look hard you will find dozens of decent sites that 
will help one understand meteorites alot better. Also, Nortons new book goes 
alot further than Rocks From Space, and it is filled with colored pictures 
demonstrating the differences in their appearance. It is called The Cambridge 
Encylcopedia of Meteorites, and is highly recommended. Another very in depth 
book is Meteorites and Their Parent Planets by Harry McSween, Jr. To read it and 
understand (most of) it takes great patience and focus...good luck. Another 
interesting (online) source of information and pictures is the Dweir Studies. 
The link to it is below. There are other books, sites that others may refer you 
to that are helpful.

http://www.geocities.com/~dweir/

Have fun...it takes awhile to get the full depth. I've studied 
it quitea bit and I still get turned around on ideas and 
concepts.

John

  - Original Message - 
  From: 
  Mark Morawski 
  
  To: [EMAIL PROTECTED] 
  
  Sent: Monday, September 02, 2002 9:33 
  AM
  Subject: [meteorite-list] Beginner 
  Questions on Meteorite Classification
  
  I am 
  a beginning collector and have read Norton's Rocks from space. I am 
  wondering if there is any online definition of the currently used 
  classification system as it differs from the system described by Norton. 
  Specifically when a meteor is classified as a H, L or LL of 3.X with a 
  weathering of Y and a shock rating of Z. Where would one find the 
  definition of X, Y and Z?
  
  
  Second question, are there any online photographs 
  that show the comparision of 4, 5, and 6. I am a big fan of unclassified 
  NWA's and would like to get some feel for what these meteors 
  are?
  
  Last 
  question if I wanted to learn more about the technical side of the hobby, what 
  would be good reading material on or off line. I am looking to go alot 
  deeper than Norton.
  
  Thanks All
  
  
  -Mark-
  


Re: [meteorite-list] Fwd: Ron 1

2002-08-31 Thread John Divelbiss



Tom,

The pictures are certainly not convincing on website. Looks 
like a "pipe dream". But itlooks like others are 
saying the same thing, by the intro on a couple webpages.I only know about 
what kind of meteorites that have been determined to date. This does not look 
like any of them. If it is real, it will be recognized in time. Thanx 
forcurious information.

One more opinion,

John Divelbiss
IMCA 2006

  - Original Message - 
  From: 
  James_TOM Knudson 
  To: [EMAIL PROTECTED] 
  
  Sent: Saturday, August 31, 2002 4:44 
  PM
  Subject: [meteorite-list] Fwd: Ron 
1
  
  
  
  Have you list people read this? You should! Tomhttp://www.marslife.com/marsrock/dearron3.htm 
  
  
  
  Chat with friends online, try MSN Messenger: Click 
Here


[meteorite-list] impact melts and mesosiderites

2002-08-28 Thread John Divelbiss



Hello all,

I want to ask the group their opinion on whether they agree 
with the latest book from Norton that places mesosiderites in the achondrite 
section, rather than the stony-iron section of the book. As I understand it, he 
"suggests" that mesosiderites are merely impact melts of the howardite/eucrite 
parent body with an iron body. Similar to H and L impact melts.

Personally, I agree with this concept after 
comparingChico (L6 IMB), Sahara98362 (H6 IMB) and the new Gao (b) 
(H5? IMB) with slices of mesosiderites Vaca Muerta and 
Ethersville.

Vaca Muerta looks like the H and L IMB's, while the 
Ethersville I have has larger pockets of metal than the others...but similar to 
some of "normal"Gao I have.

Willmesosiderites one day be renamed 
Howarditeimpact melts or Eucrite impact melts?

I may be going too fast here, but the suggestion in the Norton 
book leads a novice like me down that path.

Wondering???

John Divelbiss
Reading, PA
IMCA 2006 


Re: [meteorite-list] Mesosiderite Biography

2002-08-28 Thread John Divelbiss

Rob,

Thanx Rob...I'll have to read Rubin's book one day.

Sounds like the molten body aspect plays important role in this special
class of meteorites.

John
- Original Message -
From: Matson, Robert [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Wednesday, August 28, 2002 8:59 PM
Subject: [meteorite-list] Mesosiderite Biography


 Hi All,

 Rubin has an entire chapter in his book devoted to mesosiderites:
 Mesosiderites:
 Biography of a Shocked and Melted Asteroid.  He argues that there is a
 single mesosiderite parent body, that it is located in the inner part of
the
 asteroid belt, and that it is a differentiated body.  Mesosiderites were
 created
 by a low-velocity impact ( 1 km/sec) of a metallic, largely molten body
 with the basaltic crust of this differentiated asteroid, very early in the
 asteroid's history.  Rubin's book, _Disturbing the Solar System_ goes
 into a lot more detail about the complicated history of the mesosiderites'
 parent body.  --Rob

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Re: [meteorite-list] Springfield Show this weekend!

2002-08-10 Thread John Divelbiss



List,

I was at the Springfield Show this past Friday. Being my first 
show, I was very interested in seeing some nice material first hand. The balance 
of meteorites available to the rest of the show's materials was very small, but 
we were not without great representation of dealers, collectors and ofcourse the 
rocks. 

At the invite of fellow collectors, Charlie 
Devine and Gary Swanson from Rhode Island, I traveled the 6 + hours from PA in 
anticipation. 

My first encounter when the doors opened was with 
thehumble Alain Carion. He was very interested in discussing and selling 
his beautiful selection of meteorites and impactite. Getting my copy of his book 
signedwas a treat.I ended up getting some his Tafassasset, a CR 
equilibrated to a6 or 7, so the chondrite believers say. However, he 
mentioned that others argue it is primative (achondrite). But Alain assured us 
thatit was primative, as in a chondrite. 

Awonderful transition type...one of a kind I believe 
? 

I also picked up a fragment of the microtektite material from 
Haiti...very nice. Alain, thank you for your time (Ann Black, please let him 
know if you would).

Others there included Geoff Cintron from Island Meteorites. 
Geoff had some awesome pieces for sale and a nice chunk of Murchinson was my 
prize. Thanx for the opportunity, and to be able to hold and look at some choice 
material. Geoff carries the flag well.

The other main dealer was Serg from Comet Meteorite Shop who 
have some great stuff, including the Dhofar lunars and shergottites. The NWA 470 
(?) was one I was interested in, their CH...but I came up short. Maybe someday. 
Thanx for the look see Serg.

A fair amount of Sikhote Alin's were seen at several stands, 
and some of the newer Campos were available from the field 
collectors.

It would be nice to see more dealers next year. Maybe more 
interest and feedback will bring them.

Well thanx to Charlie and Gary for their interest in me. It 
was a great day. We should go to Denver, then to Tuscon, then to the strewn 
fields ofnow I'm dreaming.

Good show...recommended to all...especially here in the east. 
(Sunday is the last day)


Regards,

John Divelbiss 
IMCA 2006

  - Original Message - 
  From: 
  [EMAIL PROTECTED] 
  
  To: [EMAIL PROTECTED] 
  
  Sent: Thursday, August 08, 2002 8:36 
  AM
  Subject: [meteorite-list] Springfield 
  Show this weekend!
  East Coast Gem, Mineral  Fossil 
  ShowAug. 9-11, 
  2002Held annually in the 
  air-conditioned Better Living Center at the Eastern States Exposition, 
  1305 Memorial Drive, West Springfield, MA 01089. Show Hours: 10am-7pm Fri-Sat, 
  10am-5pm Sun.Over 180 dealers from 
  all over the U.S. and abroad, offering a variety of items related to earth 
  sciences. Door prizes, guest speakers, museum quality exhibits, gold panning, 
  and a large wholesale section. Plenty of free parking. Air conditioned hall. 
  Largest wholesale section in the East! 2002 show 
  theme will be The Collection of Jim 
   Dawn Minette.Admission is $6/adult, $5/senior or student, 12  under 
  is free if with an adult. Contact Martin Zinn 
  Expositions.


Re: [meteorite-list] Posted on Sci.astro.amateur what is it?

2002-07-16 Thread John Divelbiss

Tom,

Looks like a slag from a smelting process. Probably the lighter material
from the top of the process. If you see that someone buys it, I can find
some more for them here in PA. The hills are full of it. The magnetic
property is probably due to the rock being melted having magnetite in it.

I once thought that some slag I found was possibly a meteorite. It had
chondrules, crust, the works...so I thought. That experience sent me into
the world of studying and collecting rocks from space. I encourage any of
these people to learn the real story about what meteorites look like.
Michael Casper and Robert Haag looked at it for me...both encounters were
encouraging enough to learn the truth.  We should do the same for these
finders/sellers of meteorwrongs.

John Divelbiss
Reading, PA
IMCA 2006

PS Thanx again to Micheal and Robert if you are out there...you showed great
patience back then with such a neophyte

- Original Message -
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Tuesday, July 16, 2002 7:49 PM
Subject: [meteorite-list] Posted on Sci.astro.amateur what is it?


 Saw this today on the sci.astro.amateur newsgroup. What is
 it? I don't believe it's a meteorite due to the large pockets in it.
 They say it's magnetic.

 Me thinks it's another meteor-wrong.

 http://www.rentadj.com/meteorite.htm


 Regards,

 Tom Randall
 IMCA#6170

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Re: [meteorite-list] my new website

2002-07-16 Thread John Divelbiss

Steve,

All I get is a Lycos page that says the webpage could not be found. Good
luck with you venture.

John Divelbiss

- Original Message -
From: Steve Arnold, Chicago!!! [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Tuesday, July 16, 2002 8:11 PM
Subject: [meteorite-list] my new website


 Hi again list. I think I fixed my link to my website. again it is
 http://www.stormbringer60120.tripod.com this should get you to my site.
 Hopefully! Let me know

 =
 Steve R.Arnold, Chicago, IL, 60120
 I. M. C. A. MEMBER #6728
 The Midwest Meteorite Collector!
 Collecting Meteorites since,June, 1999!!!

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Re: [meteorite-list] Posted on Sci.astro.amateur what is it?

2002-07-16 Thread John Divelbiss

Tom,

I went ahead and emailed the guy. Encouraging him to find out why it is not
a meteorite by looking at websites or purchasing a book...such as Norton's
two.

John
- Original Message -
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Tuesday, July 16, 2002 7:49 PM
Subject: [meteorite-list] Posted on Sci.astro.amateur what is it?


 Saw this today on the sci.astro.amateur newsgroup. What is
 it? I don't believe it's a meteorite due to the large pockets in it.
 They say it's magnetic.

 Me thinks it's another meteor-wrong.

 http://www.rentadj.com/meteorite.htm


 Regards,

 Tom Randall
 IMCA#6170

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Re: [meteorite-list] Posted on Sci.astro.amateur what is it?

2002-07-16 Thread John Divelbiss

Tom,

Way to go...the guy just emailed me and said he looked at some meteorite
information and was convinced that the piece was not one. He thanked me for
my email. I had told him a fellow collector had spotted his piece on a
website.

I think we all can learn a lesson here. Lets get the word out when we can to
keep the meteorwrongs from turning someone off. Case closed on this one.

John



- Original Message -
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Tuesday, July 16, 2002 7:49 PM
Subject: [meteorite-list] Posted on Sci.astro.amateur what is it?


 Saw this today on the sci.astro.amateur newsgroup. What is
 it? I don't believe it's a meteorite due to the large pockets in it.
 They say it's magnetic.

 Me thinks it's another meteor-wrong.

 http://www.rentadj.com/meteorite.htm


 Regards,

 Tom Randall
 IMCA#6170

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Re: [meteorite-list] NWA889

2002-07-09 Thread John Divelbiss

Adam,

Thanx for response.

Now that's two votes for 787, 869 and 900 pairings. As far as 904 goes...it
does look similar, and it does have melt inclusions, like others.  But the
diogenite (which I have not seen or heard of in others, yet) and the crust
that you said is just plain ugly, make them different in at least two ways.
I know the crust is ugly because I have a nice end piece. With those two
items in mind I'll agree that 904 is not paired with the others. But again
it is only my opinion here agreeing with you.

John Divelbiss


- Original Message -
From: Adam Hupe [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Tuesday, July 09, 2002 12:53 AM
Subject: Re: [meteorite-list] NWA889


 Dear List members,

 I have been asked the status of NWA 904 and how it compares to NWA 869,
900
 ect..  This is what we have observed so far:

 A.) The black clasts are impact melt areas not carbonaceous.
 B.) It appears to be a regolith breccia.
 C.) Although the chondrules vary in crispness from type 3 to 6 most of
them
 are type 5.
 D.) The crust is totally different than 869 and 900, is not as fresh and
has
 a rather odd warty texture.
 F.) The green diogenite looking clasts are achondritic.
 G.) NWA 904 has different zones which show different degrees of weathering
 and petrologic type.
 H.) I have a sample of NWA 869 and have seen hundreds of kilos of it at
the
 Tucson Gem and Mineral Show and it is not paired with NWA 904.
 I.) NWA 869 looks as if it might be paired to NWA 787, a very nice looking
 L6.
 J.) NWA 869 has had three different classifications L4, L5 and L6.  I
guess
 it depends on the type samples that were provided to the laboratories.  I
do
 not blame the research labs because most dealers only deposit a 20 gram
type
 sample.  Sometimes this amount of material is not enough to cross the
 different petrologic boundaries and thus you can get many classifications
 for the same meteorite.  Some dealers only send in a portion which they
 think will get the best classification, sharp chondrules, less weathering
 etc..
 K.) Although NWA 900 has black clasts it does not display the zoning of
NWA
 904, has no green clasts and the weathering is consistent throughout the
 stone.
 L.) In my opinion NWA 787, 869 and 900 are paired.  I have not seen NWA
995
 so I cannot comment on its pairing status.

 If we had more time we would do a bulk analysis on each of these to once
and
 for all settle the pairing question.  Unfortunately the Microprobe we
lease
 is booked until September.  We are working on some very exciting material
 that we are hoping to announce by then.  I remember a time when scientist
 used scramble at the opportunity to study even ordinary chondrites.

 Wishing everybody the best,

 Adam Hupe


 - Original Message -
 From: John Divelbiss [EMAIL PROTECTED]
 To: [EMAIL PROTECTED]; rochette [EMAIL PROTECTED]
 Sent: Monday, July 08, 2002 4:17 PM
 Subject: Re: [meteorite-list] NWA889


  Pierre and Rob,
 
  Thank you for responses about NWA 900 and 995. Melt, and not carbonacous
 for
  900...that is cool too...since I really like melts. We all look forward
to
  more information on these. (Matteo...do you still think you have seen
  achondrite clasts?...in another slice maybe?
 
  Question...has anyone suggested the same(achondrite clasts) for 869?
That,
 I
  have not heard of.
 
  Greg and Adam...are you out there?  What is the status on the
collection
 in
  a slice, or NWA 904?
 
  Now I'm (pretty) sure there are achondrite clasts in the 904 slice I
  have...but if I've learned anything is that we should wait for the
 analysis.
 
  John
 
  PS Side note...my thin section of 869 from Jeff Rowell looks like I have
 an
  L3+ something clast in a L5 or L6 matrix. Probably the slice is a
 brecciated
  chunk of L6 clast with a chunk of L3+ matrix in the middle.  See how we
 get
  turned around.  (Al...I used criteria 7 and 8 from page 87 of the
Norton
  Encyclopedia to come up with my own classification). This is kind of
  fun...but I'll stick to engineering.
 
  PSS Dean...by the way, you do have the best buy out there!
 
  - Original Message -
  From: rochette [EMAIL PROTECTED]
  To: [EMAIL PROTECTED]
  Sent: Monday, July 08, 2002 12:24 PM
  Subject: [meteorite-list] NWA889
 
 
   Dear list
  
   several pieces from Matteo that were analysed carefully (microprobe,
and
  so
   on) revealed that the clasts are not exotic (i.e. carbonaceous or
   achondritic) but just L6: black is impact melt and gray is moderately
   shocked, the matrix being L3.8. It remains to be demonstrated that
  Matteo's
   pieces are really paired with Dean's. The pictures are not so
 similar
  
  
   Pierre
  
  
  
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Re: [meteorite-list] NWA889

2002-07-08 Thread John Divelbiss

Pierre and Rob,

Thank you for responses about NWA 900 and 995. Melt, and not carbonacous for
900...that is cool too...since I really like melts. We all look forward to
more information on these. (Matteo...do you still think you have seen
achondrite clasts?...in another slice maybe?

Question...has anyone suggested the same(achondrite clasts) for 869? That, I
have not heard of.

Greg and Adam...are you out there?  What is the status on the collection in
a slice, or NWA 904?

Now I'm (pretty) sure there are achondrite clasts in the 904 slice I
have...but if I've learned anything is that we should wait for the analysis.

John

PS Side note...my thin section of 869 from Jeff Rowell looks like I have an
L3+ something clast in a L5 or L6 matrix. Probably the slice is a brecciated
chunk of L6 clast with a chunk of L3+ matrix in the middle.  See how we get
turned around.  (Al...I used criteria 7 and 8 from page 87 of the Norton
Encyclopedia to come up with my own classification). This is kind of
fun...but I'll stick to engineering.

PSS Dean...by the way, you do have the best buy out there!

- Original Message -
From: rochette [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Monday, July 08, 2002 12:24 PM
Subject: [meteorite-list] NWA889


 Dear list

 several pieces from Matteo that were analysed carefully (microprobe, and
so
 on) revealed that the clasts are not exotic (i.e. carbonaceous or
 achondritic) but just L6: black is impact melt and gray is moderately
 shocked, the matrix being L3.8. It remains to be demonstrated that
Matteo's
 pieces are really paired with Dean's. The pictures are not so similar


 Pierre



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Re: [meteorite-list] nwa869

2002-07-07 Thread John Divelbiss

Hi Al and list,

Thank you again for being attentive to my ramblings. You and countless
others are close to, and more informed of the process and the expertise
given to the analysis of meteorites. I did not mean to trivialize this
process...and if I did offend anyone, I'm sorry. My nature, being a
mechanical consulting engineer, is to evaluate all situations with a bit of
skepticism and caution. It comes through on occasion with my meteorite
collection. So does my ignorance on the subject, but I'm learning.

As far as looks go when evaluating a particular piece, or when comparing
one to another...well that's all I've got, and the word of the seller and
it's evaluator. In the case the NWA's, the collection process as you
mentioned makes the identification process that much harder to be sure of a
given class/type. In the case of 869 and all its brother and sister #'s...I
would like to see a concerted effort to nail this one down. The wonderful
900 slices from Matteo deserve it, along with the unique 869 pieces Dean and
Mark have seen and offered with nice C clasts and brecciation, the same for
995 slices sold last winter, and let us not forget the beautiful slices of
904 and others (787 I believe) from the Hupes. All of these, and others as
Matteo suggested deserve an opinion of are they from the same fall or
source?. I would appreciate it, and I'm sure many others would also. How it
would get done is a mystery to me. Maybe it could be project for a
university to study and comment on. How about it Ron?

Well I'm going to stop embarrassing myself on this one. Thanx all for
reading. Any identification information on any of the mentioned #'s would be
appreciated along the way. Thanx in advance.

John


- Original Message -
From: almitt [EMAIL PROTECTED]
To: John Divelbiss [EMAIL PROTECTED]
Cc: Matteo Chinellato [EMAIL PROTECTED]; dean bessey
[EMAIL PROTECTED]; [EMAIL PROTECTED]
Sent: Sunday, July 07, 2002 8:23 PM
Subject: Re: [meteorite-list] nwa869


 Hi John,

 Probably in the past when ordinary chondrites were classified by oxidized
iron to iron
 metal percentages there was no doubt room for more error. Today using the
microprobe
 for chemical analysis, scientists are looking at about ten different items
and trace
 chemical signatures to distinguish the minute variation of the common
chondrites. To
 further help this out and isolate it more, the shock metamorphism is also
taken into
 consideration. Although no process is perfect I think there is a pretty
good handle on
 being able to distinguish individual falls these days using the processes
stated. Also
 weathering comes into play on these.

 With that said, I would think the bigger problem on a fall coming out of
the Sahara
 desert is whether some nomad decided to throw (or perhaps the rocks just
get mixed up
 in camel transit) into the lot and so we have a mixture of different falls
stated to
 be from one fall. As with meteorite dealers it is a matter of trust on
whom you are
 dealing with and if they are being honest with you or not. This isn't
meant to be a
 grind to those going over there an collecting these items.

 I don't think it is always a good idea to go by looks on meteorites (I
have many in my
 collection that are similar in appearance but from discrete falls and
finds) and until
 a detail analysis is done then it is really hard to say. As a rule with
time when
 these meteorites are looked at they may refine the classification. With
the break up
 of Hebe and back into a rubble pile we sample a variation of classes in a
single
 chondrite sometimes. I trust the researchers to be able to distinguish the
bulk matrix
 of these finds and produce a accurate classification. It is to their own
advantage
 when they do research on these to know the accuracy of classification on
the
 meteorites they are dealing with so they don't go the wrong direction on
understanding
 them. All my best!

 --AL

 John Divelbiss wrote:

 I just looked at the group I have and quite frankly it is not easy to say
 they are different materials. Even under the scope. Yet I see the reports
of
 L4 or L5 for NWA 869, L6 for 787,  now L3.4/4 for 900, and similar
 suspicions for 995 (not 905 that I listed in earlier message). Thin
sections
 of each one may help...but as Dean has stated, his section may have thrown
 off the evaluation of his sample relative to its true petrologic type.

 All this makes me wonder about the process and accuracy of identifying a
 particular fall or find. As I understand it, the boundaries between H's
and
 L's can be somewhat blurred when metal and iron contents are in the
 transition percentage levels. All the more bewildering.


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Re: [meteorite-list] nwa869

2002-07-06 Thread John Divelbiss

Hello List,

I'm probably wrong here, so please help me out here.

Lets get it out open for everyone...which ones are we talking about here
that maybe paired with 869. I've been wondering about this group for awhile
now.

NWA 869  paired with
NWA 900 ?
NWA 904 ?
NWA 905 ?

Are there others that might match up?

At times, I think NWA 787 (L6) looks like a close (differentiated) cousin to
869.

Could a large enough meteor have all these petrological possibilities within
different zones of the original large mass (prior to breaking up)... in
theory I suppose.  One piece looking like an L5 or L6, and another L3/4.4
(Matteo is this correct for yours...and which NWA # of yours is it?)

Zag comes to mind being a H3-6. Obviously this mean that some chondrules are
3's and others are differentiated all the way to 6. Can you see these
differences in one slice or is it different from piece to piece? Could that
the same for 869 and its brothers?

By the way...I have pieces (NWA's) of all the above, and I think each one is
very nice material and at first glance they look about the same. Crusts are
slightly different in some cases...but could that be from the desert effects
in different locales?


Thanx for reading,

John Divelbiss

- Original Message -
From: Matteo Chinellato [EMAIL PROTECTED]
To: dean bessey [EMAIL PROTECTED];
[EMAIL PROTECTED]
Sent: Saturday, July 06, 2002 2:03 AM
Subject: Re: [meteorite-list] nwa869


 Hello all

 Sorry but I have a new classification for this type of
 chondrite from the pieces I have sent for analysis, is
 L3/4.4
 Regards

 Matteo

 --- dean bessey [EMAIL PROTECTED] wrote:
  Does anyone know the tkw for nwa869?
  Thanks,
  Rex
  I had just over 500 kilos and I have another 70
  kilos in morocco so I went
  through around 600 kilos of NWA869 myself. I have 50
  or 60 kilos here now
  and so I still have well over 100 kilos from the
  original 600 that I
  originally had. Other dealers have more including
  some that are obviously
  from the same fall but sold as something different
  because of a belief that
  some samples are much better than the L5
  classification that will appear in
  the meteoritical bulletin. The inclusion like things
  are fairly rare so I
  can see it being missed during classification if the
  sample that was used to
  make the thin section never had one of the
  inclusions. Look at this photo:
  http://www.meteoriteshop.com/aa-nwa869b.jpg
  The bottom half is typical NWA869 but the top part
  looks like a totally
  different meteorite. This one dont show it but many
  samples have what appear
  to be black or whitish inclusions.
  I am going travelling next week but I can send a
  kilo of uncut specimens to
  anybody who paypals me $200 over the weekend. For
  $230 I will cut the kilo
  of specimens in two or for $300 a kilo I will cut
  you 40 to 60 gram (On
  Average) slices (And of course the two endpieces per
  stone). No guarantees
  of anything unusual but I will send you a photo of
  the uncut specimens as
  they looked before I cut them so that I cant cherry
  pick them and decide
  after I cut them which ones to send you - so you
  would have as much a chance
  to get the inclusion looking things as if you cut
  them yourself.
  Just paypal me if you want them as I have plenty to
  fill any orders. I will
  cover postage to the US (which cost $11) but other
  countries add $15 for
  postage (Which cost about $26 to $28 so I am getting
  the same price no
  matter where they are being sent)
  Cheers
  DEAN
 
 _
  You dont have to go to NASA to get a Rock from outer
  space. Or even from the
  Planet Mars or the Moon. You just have to visit the
  Meteorite Shop.
  www.meteoriteshop.com
 
 
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  Chat with friends online, try MSN Messenger:
  http://messenger.msn.com
 
 
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 =
 M come Meteorite - Matteo Chinellato
 Via Triestina 126/A - 30030 - TESSERA, VENEZIA, ITALY
 Email: [EMAIL PROTECTED]
 Sale Site: http://www.mcomemeteorite.com Collection Site:
http://www.mcomemeteorite.info
 International Meteorite Collectors Association #2140
 MSN Messanger: [EMAIL PROTECTED]
 EBAY.COM:http:[EMAIL PROTECTED]/

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Re: [meteorite-list] nwa869

2002-07-06 Thread John Divelbiss

Al,

Your point is well taken on the source aspect of this discussion. As with
any type, no matter the name or number assigned to it...there is good chance
they are from the same asteroid. HED's from Vesta, etc.

I just looked at the group I have and quite frankly it is not easy to say
they are different materials. Even under the scope. Yet I see the reports of
L4 or L5 for NWA 869, L6 for 787,  now L3.4/4 for 900, and similar
suspicions for 995 (not 905 that I listed in earlier message). Thin sections
of each one may help...but as Dean has stated, his section may have thrown
off the evaluation of his sample relative to its true petrologic type.

All this makes me wonder about the process and accuracy of identifying a
particular fall or find. As I understand it, the boundaries between H's and
L's can be somewhat blurred when metal and iron contents are in the
transition percentage levels. All the more bewildering. I'm glad I'm not
assigning these things. How does one know when he or she has got it right?
Personally I'm going like them all for being rocks from space. With that in
mind is seems silly to argue between one fall or # versus another with mine
is different than yours... when at first look they do not appear to be any
different.

I will however be cautious of paying too much for so called petrological
type of 3's and 4's when it isn't obvious. I'll stick with do I like it or
want it or not, relative to the price it is offered at ?.

Thanx again Al for response,

John Divelbiss


- Original Message -
From: almitt [EMAIL PROTECTED]
To: John Divelbiss [EMAIL PROTECTED]
Cc: Matteo Chinellato [EMAIL PROTECTED]; dean bessey
[EMAIL PROTECTED]; [EMAIL PROTECTED]
Sent: Saturday, July 06, 2002 6:07 PM
Subject: Re: [meteorite-list] nwa869


 Hi John and all,

 Many of the parent bodies have yet to be identify to the many of the
meteorites we
 have accumulated here on Earth. However there are some suspect parent
bodies which
 have been identified by spectral matches to the asteroids and meteorites.
One such
 match is asteroid Hebe for the H type chondrites. It is obvious from
looking at Hebe's
 surface that it has a variation in spectra as the asteroid rotates
representing the
 different metamorphism (classes) we see from the change in olivine to
pyroxene ratio.
 No doubt the asteroid had a large enough impact at one time to knock it
apart allowing
 the more differentiated classes to show up on the outside, and some of the
outer part
 of the asteroid became buried in the interior as it reassembled into a
rubble pile
 asteroid. It isn't uncommon for H type chondrites to have brecciation of
various
 different classes all in one meteorite. A good example of this is Zag
(H3-6) and
 Noblesville, Indiana an H4 chondrite with H6 clasts. Probably why we get
so many of
 the H type chondrite material now is we are living at a time when the
results of the
 impacts which have been migrating to us over the eons have finally made
their way to
 fall at a constant rate. If we lived in a different time many years from
now or very
 long ago then perhaps and most likely we would sample some other type of
meteorite
 falls. Perhaps it wouldn't be uncommon for some rare type meteorite (to
us) to fall at
 a regular more consistent rate.

 How does this tie into NWA 869. As stated earlier we don't know all of the
parent
 bodies yet (a good reason for funding to NASA to build a craft to visit as
many
 asteroids as we can) However there is one asteroid of about 7 km in
diameter that
 resides in the main belt and may be related to the L type chondrites and a
possible
 parent body though a very weak link. Asteroid 3628 Boznemcova exhibits
spectral
 qualities to the L's and LL's. It is obviously too small to be a complete
asteroid and
 has been suggested it is a fragment of a much larger asteroid. Perhaps
this might be
 what is left of the NWA 869 and other L type meteorites and why we sample
a steady
 rate of L type chondrites.

 Beside these parent bodies, we are fairly sure of the Vesta and HED type
meteorite
 connections as well as the Martian (SNC), and lunar meteorite to Moon
connections.
 It's what makes reading about and research on meteorites so exciting and
trying to
 figure out all of the complicated puzzles they present to us.

 --AL Mitterling




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Re: [meteorite-list] Which meteorite is real - top or bottom?

2002-07-05 Thread John Divelbiss

Tim,

I'll guess the bottom one is a real meteorite. Maybe a 1947 SA?

The top specimen looks too roundish. Hematite ore or something like it?

Hey...50/50 chance.


John Divelbiss
IMCA #2006

PS   The 102 F (in the shade) we had here in Eastern Pennsylvania yesterday
was not a dry heat. WOW! At least we finally got a break today...below 90
F.   Hope all of you out West get a break soon. And hopefully it gets above
70 F for you guys in Europe. Take care all.

- Original Message -
From: Tim Heitz [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Friday, July 05, 2002 2:06 AM
Subject: [meteorite-list] Which meteorite is real - top or bottom?


 Hello,

   Which one do you think is real?  The top or the bottom.

   http://www.meteorman.org/wrong_or_right.htm

   I will e-mail with the results this weekend, place your vote.

   Happy 4th of July.
   Tim Heitz



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Re: [meteorite-list] Interesting meteorites- Portales and Sahara 98362

2002-06-08 Thread John Divelbiss



To answer one of my own questions...I can offer this...impact 
melts are just what the name suggests, two materials that have collided, melted 
and cooled together. Probably on or near the surface???

Portales being from a "deep" region, is a combination of two 
materials that were joined by shock and pressure injection(of metal into stone). 
Temperature must not been a major factor for the depth. Could a Portales and a 
Sahara 98362 have formed in the same type of collision?

I would like more input on the particulars of 98362, if 
possible.

John Divelbiss


  - Original Message - 
  From: 
  John Divelbiss 
  To: [EMAIL PROTECTED] 
  
  Sent: Friday, June 07, 2002 11:35 
PM
  Subject: [meteorite-list] Interesting 
  meteorites- Portales and Sahara 98362
  
  Hello all,
  
  The list has recently discussed the Portales Valley 
  meteorite with more to be said I'm sure. I have a wonderfulpiece that 
  has a nice mix of metal vein and stone...including a few large 
  chondrulesright next to a metal vein. Very strange...you would think 
  such an impact would alter the stone greatly...but it doesn't look like it at 
  first glance. Also the crust over the metal portion is black and not thick. 
  The crust over the stone portion is similar but has the look of having more 
  minerals in it. With my small 5g piece, I cannot make too many 
  observations.
  
  That brings me to a different meteorite. It is Sahara 98362, 
  which is supposedly a H6, impact melt breccia (IMB). My first question 
  is"Has it been thoroughly studied, and where can I find 
  results?"
  
  The second issue...what is difference between animpact 
  melt and what happended to the Portales stone material?One hit by stone and the other hit by an iron? It must be more than 
  that, because the 98362 material is glass-like when viewing a fractured 
  surface. It is loaded with metal. I seen no other meteorite like it. It 
  looks almost like the sulphur slag that has been discussed 
lately.
  
  Help...will someone please provide more insight into this 
  very strange meteorite?
  
  Thanx in advance,
  
  John Divelbiss
  
  


[meteorite-list] Interesting meteorites- Portales and Sahara 98362

2002-06-07 Thread John Divelbiss



Hello all,

The list has recently discussed the Portales Valley meteorite 
with more to be said I'm sure. I have a wonderfulpiece that has a nice mix 
of metal vein and stone...including a few large chondrulesright next to a 
metal vein. Very strange...you would think such an impact would alter the stone 
greatly...but it doesn't look like it at first glance. Also the crust over the 
metal portion is black and not thick. The crust over the stone portion is 
similar but has the look of having more minerals in it. With my small 5g piece, 
I cannot make too many observations.

That brings me to a different meteorite. It is Sahara 98362, 
which is supposedly a H6, impact melt breccia (IMB). My first question 
is"Has it been thoroughly studied, and where can I find 
results?"

The second issue...what is difference between animpact 
melt and what happended to the Portales stone material?One hit by stone and the other hit by an iron? It must be more than that, 
because the 98362 material is glass-like when viewing a fractured surface. It is 
loaded with metal. I seen no other meteorite like it. It looks almost like 
the sulphur slag that has been discussed lately.

Help...will someone please provide more insight into this very 
strange meteorite?

Thanx in advance,

John Divelbiss




[meteorite-list] African meteorites

2002-05-04 Thread John Divelbiss



Hello All,

Being my first week on "the list", I'll give you all my take 
on why "African Meteorites are cool because." 

great pieces of  

LUNAs
SNCs
CRs
HEDs
LLs
COs
Rs
and the occasional unclassified individual (that could be one of above if I 
chose to cut it!)

...all adorn my collection without breaking the bank. It has been a great 
time to collect during the past couple years. The African meteorties have been a 
blessingto the common working man/collector.

Enjoy them,

JohnDivelbiss