[meteorite-list] Meteorite Picture of the Day

2014-08-12 Thread Paul Swartz via Meteorite-list
Today's Meteorite Picture of the Day: Allende TS

Contributed by: John Kashuba

http://www.tucsonmeteorites.com/mpodmain.asp
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[meteorite-list] Geoff Notkin

2014-08-12 Thread almitt2--- via Meteorite-list

Greetings,

Geoff, if you would send me your email address so I can contact you.

Thanks!

--AL Mitterling

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[meteorite-list] Katie Paterson - the last word?

2014-08-12 Thread Peter Davidson via Meteorite-list
Dear All

Thank you again for all the replies and for the generally well written and 
argued cases you put to back up your point-of-view. I was a pleasure to be part 
of this debate and encouraging to see how many people have been touched by this 
topic - enough to put finger to keyboard and say what you feel. If anyone wants 
to contact me about this please do so off list and I will be happy to reply. In 
the meantime I think that it is time to close down this particular thread.

Best Wishes

Peter Davidson
Senior Curator of Minerals

National Museums Collection Centre
242 West Granton Road
Edinburgh
EH5 1JA
00 44 131 247 4283
p.david...@nms.ac.uk

Discover the treasures of China's Ming dynasty at the National Museum of 
Scotland.
Ming: The Golden Empire, 27 June-19 October 2014, 
www.nms.ac.uk/ming 

National Museums Scotland, Scottish Charity, No. SC 011130
This communication is intended for the addressee(s) only. If you are not the 
addressee please inform the sender and delete the email from your system. The 
statements and opinions expressed in this message are those of the author and 
do not necessarily reflect those of National Museums Scotland. This message is 
subject to the Data Protection Act 1998 and Freedom of Information (Scotland) 
Act 2002. No liability is accepted for any harm that may be caused to your 
systems or data by this message.
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[meteorite-list] cc for sale

2014-08-12 Thread Abdelfattah Gharrad via Meteorite-list
Dear list,
I am offering cc for sale and other type. for pictures and infos please email 
me off list.
All the best,
Abdelfattah.
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[meteorite-list] Perseids

2014-08-12 Thread Anne Black via Meteorite-list
Did anyone notice the Google Doodle of the day?
Pretty pictures with shooting Perseids.
Go take a look.


Anne M. Black
www.IMPACTIKA.com
impact...@aol.com

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[meteorite-list] Colliding Atmospheres: Mars vs Comet Siding Spring

2014-08-12 Thread Ron Baalke via Meteorite-list

http://science.nasa.gov/science-news/science-at-nasa/2014/12aug_marscomet/  

Colliding Atmospheres: Mars vs Comet Siding Spring
NASA Science News
August 12, 2014

On October 19, 2014, Comet Siding Spring will pass by Mars only 132,000 km 
away--which would be like a comet passing about 1/3 of the distance 
between Earth and the Moon.

The nucleus of the comet won't hit Mars, but there could be a different
kind of collision.

We hope to witness two atmospheres colliding, explains David Brain of
the University of Colorado's Laboratory for Atmospheric and Space
Physics (LASP).  This is a once in a lifetime event!

Everyone knows that planets have atmospheres.  Lesser known is that
comets do, too.  The atmosphere of a comet, called its coma, is made
of gas and dust that spew out of the sun-warmed nucleus.  The atmosphere
of a typical comet is wider than Jupiter.

It is possible, says Brain, that the atmosphere of the comet will
interact with the atmosphere of Mars.  This could lead to some
remarkable effects - including Martian auroras.

The timing could scarcely be better.  Just last year, NASA launched a
spacecraft named MAVEN to study the upper atmosphere of Mars, and it
will be arriving in Sept. 2014 barely a month before the comet.

MAVEN is on a mission to solve a longstanding mystery: What happened to
the atmosphere of Mars?  Billions of years ago, Mars had a substantial
atmosphere that blanketed the planet, keeping Mars warm and sustaining
liquid water on its surface. Today, only a wispy shroud of CO2 remains,
and the planet below is colder and dryer than any desert on Earth.
Theories for this planetary catastrophe center on erosion of the
atmosphere by solar wind.

The goal of the MAVEN mission is to understand how external stimuli
affect the atmosphere of Mars, says Bruce Jakosky of LASP, MAVEN's
principal investigator. Of course, when we planned the mission, we were
thinking about the sun and the solar wind.  But Comet Siding Spring
represents an opportunity to observe a natural experiment, in which a
perturbation is applied and we can see the response.

Brain, who is a member of the MAVEN science team, thinks the comet could
spark Martian auroras. Unlike Earth, which has a global magnetic field
that shields our entire planet, Mars has a patchwork of magnetic
umbrellas that sprout out of the surface in hundreds of places all
around the planet.  If Martian auroras occur, they would appear in the
canopies of these magnetic umbrellas.

That is one thing that we will be looking for with both MAVEN and
Hubble Space Telescope, says Brain.  Any auroras we see will not only
be neat, but also very useful as a diagnostic tool for how the comet and
the Martian atmosphere have interacted.

The atmosphere of the comet includes not only streamers of gas, but also
dust and other debris blowing off the nucleus at 56 kilometers per
second relative to Mars.  At that velocity, even particles as small as
half a millimeter across could damage spacecraft.  NASA's fleet of Mars
orbiters including MAVEN, Mars Odyssey and Mars Reconnaissance Orbiter
will maneuver to put the body of Mars between themselves and the comet's
debris during the dustiest part of the encounter.

It's not yet clear whether /any/ significant dust or gas will hit the
Mars atmosphere, cautions Jakosky. But if it does, it would have the
greatest effects on the upper atmosphere.

Meteoroids disintegrating would deposit heat and temporarily alter the
chemistry of upper air layers.  The mixing of cometary and Martian gases
could have further unpredictable effects. Although MAVEN, having just
arrived at Mars, will still be in a commissioning phase, it will use its
full suite of instruments to monitor the Martian atmosphere for changes. 

By observing both before and after, we hope to determine what effects
the comet dust and gas have on Mars, if any, says Jakosky.

Whatever happens, MAVEN will have a ringside seat.

Credits:

Author: Dr. Tony Phillips 
Production editor: Dr. Tony Phillips
Credit: Science@NASA

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[meteorite-list] Departure of U.S. Cargo Ship to Air on NASA Television

2014-08-12 Thread Ron Baalke via Meteorite-list


August 12, 2014
 
Departure of U.S. Cargo Ship to Air on NASA Television

After delivering almost three tons of supplies and scientific experiments to 
the crew of the International Space Station, Orbital Sciences Corporation's 
Cygnus cargo spacecraft, the SS Janice Voss, is scheduled to leave the 
station Friday, Aug. 15. NASA Television will provide live coverage of 
departure activities beginning at 6:15 a.m. EDT.

Ground controllers in the Mission Control Center at NASA's Johnson Space 
Center in Houston will detach Cygnus from the Earth-facing port of the 
Harmony module and maneuver it into release position. With the assistance of 
NASA Flight Engineer Reid Wiseman, Expedition 40 Flight Engineer Alexander 
Gerst of the European Space Agency then will use the station's Canadarm2 
robotic arm, operated from the station's cupola robotics workstation, to 
release Cygnus.

Once the spacecraft is a safe distance from the station, its engines will 
fire twice Sunday, Aug. 17, pushing it into Earth's atmosphere where it will 
burn up over the Pacific Ocean. Station crew members may have an opportunity 
to photograph Cygnus' fiery reentry back to Earth in order to gather 
engineering data that could be applied to the entry path of the European 
Space Agency's Automated Transfer Vehicle cargo ship in January 2015. The 
deorbit burn and reentry of Cygnus will not be broadcast on NASA TV.

Cygnus was launched on an Orbital Sciences Antares rocket from NASA's 
Wallop's Flight Facility in Virginia July 12 on the company's second 
commercial resupply mission to the station, arriving at the orbiting 
laboratory July 16.

For more information about the spacecraft's mission and the International 
Space Station, visit:

http://www.nasa.gov/station 

For video b-roll and media resources on the International Space Station, 
visit:

http://www.nasa.gov/stationnews 

-end-

Joshua Buck
Headquarters, Washington
202-358-1100
jb...@nasa.gov 


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[meteorite-list] membrane boxes

2014-08-12 Thread Aras Jonikas via Meteorite-list
Anyone know where to find some good (and affordable...) larger membrane boxes 
(100x100x16)? 
  
Aras 
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[meteorite-list] AD, Sale

2014-08-12 Thread Steve Witt via Meteorite-list
Fellow Fanatics,

I'm having (at least in my opinion) a huge sale. After 60 revolutions around 
our star I have at last been given the opportunity to purchase my first house. 
Proceeds from this sale will help lower my mortgage payment. I believe I have a 
little something for everyone available.If you see something you like, but 
don't like the price, email me and I will do my best to help you out. Many of 
these pieces are from my own collection, but as I said, this is the worthiest 
of causes. Inquiries off list please. I am IMCA member # 9020 and I offer a 
complete money back guarantee on all items. Links are all to Flickr. I will do 
my best to mark items SOLD as the sale progresses, so please check the item 
descriptions. Thanks for looking.

 

Irons
Ocate, Iron, IAB-MG, 319.7 gram slice, $6 per gram
https://www.flickr.com/photos/stevewitt/sets/72157645994863208/
Mundrabilla, Iron, IAB-ung 16.5 gram End piece, $99
https://www.flickr.com/photos/stevewitt/sets/72157645994351859/
Sikhote-Alin Iron, IIAB, 3.638 gram oriented button, $45
https://www.flickr.com/photos/stevewitt/sets/72157645994777500/
Odessa, 3,500 grams,Iron, IAB-MG, $1 per gram OBO. Institute of Meteoritics, 
University of New Mexico specimen.
https://www.flickr.com/photos/stevewitt/sets/72157646399465842/
Canyon Diablo, Iron, IAB-MG 420.3 grams $400 OBO
https://www.flickr.com/photos/stevewitt/sets/72157646399264652/
Whitecourt, IIIAB 224.5 grams, $7.50 per gram OBO
https://www.flickr.com/photos/stevewitt/sets/72157642873383145/

Ordinary Chondrites
Gao-Guenie H5 8.74 gram Cleaned Individual $15.00
https://www.flickr.com/photos/stevewitt/sets/72157646399365332/
Gao-Guenie H5 19.78 Fusion Crusted Individual $40
https://www.flickr.com/photos/stevewitt/sets/72157645990359867/
Carancas H4-5 8.38 grams $150 (Collected by Bob Haag)
https://www.flickr.com/photos/stevewitt/sets/72157645990342147/
NWA 4860 L4 Shock Melt 188 gram slice, Nakhla Dog Provenance. $2 per gram
https://www.flickr.com/photos/stevewitt/sets/72157645993630419/
NWA 8007 OC L3.2 (W1), $10 per gram. Slices available: 12.45, 7.62, 7.50, 7.23, 
7.18, 6.63, 6.07, 5.77 end piece, 5.50, 5.24, 4.26, 3.05, 3.03 end piece, 2.74, 
2.73, 1.59, and 1.53 grams. See:
https://www.flickr.com/photos/stevewitt/sets/72157646285101615/
NWA 7987 H4 (S2, W2) $2 per gram. Originally thought to be a CO due to the 
abundance of chondrules. Slices available: 26.57, 25.66, 25.36, 25.33, 24.86, 
24.04, 23.55, 13.45, 12.25, 7.16, 7.11, 4.78, 2.47 and .69 grams.
https://www.flickr.com/photos/stevewitt/sets/72157636635091753/

Carbonaceous Chondrites
NWA 7957, CO3.5, 3.93 grams (S2,W2) $20 per gram
https://www.flickr.com/photos/stevewitt/sets/72157645994417299/
NWA 7892, CO3.0, 11.0 grams $40 per gram
https://www.flickr.com/photos/stevewitt/sets/72157642875611913/
Jbilet Winselwan CM2 1.92 grams $75
https://www.flickr.com/photos/stevewitt/sets/72157645990412097/

Achondrites
NWA 7958, Basaltic Eucrite $8 per gram
https://www.flickr.com/photos/stevewitt/sets/72157646354005176/
NWA 8173, Enstatite Achondrite, 0.51 grams $51
https://www.flickr.com/photos/stevewitt/sets/72157645994180649/
NWA 8170, Polymict Eucrite with at least 3 different lithologies, $20 per gram. 
Slices available: 5.36 and 3.87 grams. Last two slices!
https://www.flickr.com/photos/stevewitt/sets/72157643446762573/ 
NWA  (Already submitted for classification,Paired to NWA 7989  NWA 8036) 
Eucrite Shock Melt, 450.6 grams, $7 per gram OBO
https://www.flickr.com/photos/stevewitt/sets/72157638455819634/
NWA  (Paired to 7989 and 8036), Slices $12.50 per gram. Slices available: 
19.15, 16.03, 15.49, 13.54, 11.60, 8.05, 7.88, 7.45, 5.43, 4.61, 3.80, 3.72, 
3.50 and 3.37
https://www.flickr.com/photos/stevewitt/sets/72157636479471674/
NWA 7954 Monomict Eucrite $15.00 per gram, Main Mass
https://www.flickr.com/photos/stevewitt/sets/72157637054980564/

All specimens can be seen at: https://www.flickr.com/photos/stevewitt/sets

Best,
Steve

Steve Witt
IMCA #9020
http://imca.cc/ 
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[meteorite-list] Need Sahara 00350 and 00293

2014-08-12 Thread opuntia_man via Meteorite-list
Dear Meteorite collectors,

One of the researchers here at Arizona State University has thin sections from 
Sahara 00350 and 00293 and now wants to publish the results. These are shocked 
ordinary chondrites, L6 I think. 

However, the researcher can't publish their results as these meteorites have 
not been classified. So, does anyone on this list have them or know where they 
are?

Thanks,

Laurence Garvie
Curator, Center for Meteorite Studies, ASU
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