Good Morning !!!
I have auctions ending tonight, ebay ID catchafallingstar.com. Most started
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Seven Different Planetary, ANGRITE, Full slice of Taza, Beautiful complete
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Hi everyone:
You should all have gotten or will soon get your February issue of
Meteorite magazine. Nancy and I have just sent off all of the articles for
the May issue to the publishers.
So, it is now time to think about the August and November issues! The
submissions deadlines for these are
This is simple.
Fusion, the result of material burning at extreme
temeratures, and crust, the layer on the surface that
was not there before re-entry.
Thus, FUSION CRUST
It is quite obvious that the surface of a freshly
fallen iron, with the blue-black coating is a FUSION
CRUST.
It generally
But made from the matrix component. burned material
from the parent body, regardless of how it is
chemically changed, same as the fusion crust on any
meteorite. Take a Eucrite like Stannern for example,
white interior, yet the fusion crust is glossy black.
That is not soot, it is chemically
Hi Mike and List,
Even the soot is part of the material coming into the atmosphere, altered,
combined or...
Best regards,
Greg
Greg Hupe
The Hupe Collection
NaturesVault (eBay)
[EMAIL PROTECTED]
www.LunarRock.com
IMCA 3163
- Original Message
Crus is crust, soft, hard, it doesnt matter. It is a
crust of material caused to be on the surface of the
object by fusion.
Why would iron fusion crut not be different than that
of stones? Of course it is chemically different. You
know, you can remove the fusion crust on some stones
easily as
On that subject, anyone know what actual temperature the surface of the
average Chondrite gets to on atmospheric entry? (it would no doubt vary
with the entry angle time in flight etc) but there must be a ball park
figure.
Obviously I doubt anyone can have measured it directly (unless maybe it
Then we are in complete agreement. The composition of
the crust is of no matter, only that the crust was
produced and adhered to the meteorite by means of
fusion in the atmosphere.
Michael Farmer
--- Armando Afonso [EMAIL PROTECTED] wrote:
Of course it is fusion crust.
We agree on something,
Mike wrote:
Crust is crust, soft, hard, it doesnt matter. It is a crust of
material caused to be on the surface of the object by fusion.
BUCHWALD V.F. (1975) Handbook of Iron Meteorites, Volume 1, pp. 49-50:
While the fusion crusts on stone meteorites are usually the product of simple
Meteors are pretty well modeled as black bodies, and their spectra
indicate typical temperatures of 4000-5000 K (with ablation beginning at
1500-2000 K).
Chris
*
Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com
- Original Message
On Thu, 22 Mar 2007 17:04:08 -, you wrote:
out what temp a chrondrite melts at, but presumably it gets much much
hotter than 'just the melting point temp'.
Just as a guess (and not looking at research to back it up) but I'd think that
the surface would reach only just about the same as the
GENGE M.J. and GRADY M. (1999) The fusion crusts of stony
meteorites: implications for the atmospheric reprocessing of extra-
terrestrial materials (MAPS 34-3, 1999, 341-356):
a) Fusion crusts develop on *all* meteorites during their passage of the
atmosphere ...
b) Most chondrite fusion crusts
Mike wrote:
Crust is crust, soft, hard, it doesnt matter.
Definitely agree. There is no need to create new definitions just because
we are more familiar with stony fusion crusts than we are with iron fusion
crusts.
It is a crust of material caused to be on the surface of the object by
fusion.
Hello List Members.
I have put new material on my page www.PolandMET.com
CANYON DIABLO GRAPHITE NODULES [IAB] - slices from 1400g specimen
DHOFAR 007 [AEUC] - two new large slices
NWA4560 [LL3.7] - new big full slices
JUANCHENG [H5] - Fall from China. Slices and specimens with brecciation.
http://space.newscientist.com/article/mg19325964.700-now-fly-me-to-the-asteroids-as-well.html
Now fly me to the asteroids as well
David Shiga
New Scientist
22 March 2007
They are still a long way from returning to the moon, but NASA is
already thinking about sending astronauts to an asteroid.
I have an opportunity to get a piece of this in trade but I don't know what
the interior looks like.
If anyone has pictures of knows of a web site that has pictures of this
material posted please forward the info to [EMAIL PROTECTED]
Thanks
__
In a message dated 3/22/2007 3:08:45 P.M. Mountain Standard Time,
[EMAIL PROTECTED] writes:
I have an opportunity to get a piece of this in trade but I don't know what
the interior looks like.
If anyone has pictures of knows of a web site that has pictures of this
material posted please
I have an opportunity to get a piece of this in trade but I don't know what
the interior looks like.
If anyone has pictures of knows of a web site that has pictures of this
material posted please forward the info to [EMAIL PROTECTED]
Thanks
http://www.gao-guenie.com/gao_endpiece.htm
two
Thanks to everyone that responded on this thread. I'm getting a lot
out of the posts but I haven't finished reading them completely yet.
Same thing on the magnetic question and resulting thread on that
one. Thanks to everyone who responded there too. I learned
something right off on that
Hello Berndt et al.,
I thought you and the list members might find interesting a phenomenon
that was shown to me by Marcin Cimala. In cutting an LL5 he found areas
where thick crust had built up and actually incorporated within the crust
small angular fragments of relatively unaltered meteorite.
On Thu, 22 Mar 2007 21:58:51 -0400 (EDT), you wrote:
Hello Berndt et al.,
I thought you and the list members might find interesting a phenomenon
that was shown to me by Marcin Cimala. In cutting an LL5 he found areas
where thick crust had built up and actually incorporated within the crust
small
I agree, I dont think that it is fusion crust, more
likely a brecciated section on the edge of the
meteorite.
Michael Farmer
--- Darren Garrison [EMAIL PROTECTED] wrote:
On Thu, 22 Mar 2007 21:58:51 -0400 (EDT), you wrote:
Hello Berndt et al.,
I thought you and the list members might find
Hi Mike and Darren,
I probably would have had that response too without the benefit of turning
these over in my hands and looking at them in 3 dimensions. I'm 99% sure
that if you held these in your hands, and especially if you looked at them
under the microscope, you would conclude the black
Michael, Darren, Jim and list,
I agree with Jim on this. My slice of the same stone has fragments set in a
clearly bubbly melt. I suggest that this accumulated on the back side of
the stone during oriented flight. Check out my pictures:
On Thu, 22 Mar 2007 22:05:51 -0700, you wrote:
Michael, Darren, Jim and list,
I agree with Jim on this. My slice of the same stone has fragments set in a
clearly bubbly melt. I suggest that this accumulated on the back side of
the stone during oriented flight. Check out my pictures:
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