[meteorite-list] Moss classification speculation

From: Jeff Kuyken <info_at_meteoritecentral.com>
Date: Wed Aug 30 10:02:30 2006
Message-ID: <002301c6cc3c$ed69dd40$8e558b90_at_mandin4f89ypwu>

Hi Martin,

You raise an interesting point which I was thinking of the other day after
something Mike wrote:

"It is unlike any meteorite I have seen..."

I'd say Mike's seen a few meteorites over the years! ;-) So maybe there
isn't another like it? It made me think of the CI chondrites too Martin. Not
because I think that's what it is, but rather what they all have in common.
All 5 of them are FALLS. How long do you think a meteorite like Ivuna or
Orgueil would last in a wet environment? I'm guessing not long too! I ask
the same of Moss. How long do you think a fine-grained, friable meteorite
with a considerable amount of metallic iron would last in a similar
circumstance? It could come back a "relatively" common class but maybe we
haven't seen any/many like Moss because they weather at a faster rate?? If
the classifying scientists have been reading the Moss posts, they must be
chuckling away at all the guesses so far! ;-)

Cheers,

Jeff

----- Original Message -----
From: Martin Altmann
To: meteorite-list_at_meteoritecentral.com ; 'Meteoriteshow'
Sent: Wednesday, August 30, 2006 10:50 PM
Subject: AW: [meteorite-list] Moss classification speculation


Hi Fred,

A little addendum: there are some ordinary chondrites, which are very
fragile too.
The porous Baszkowka is so friable, that it can't be cut into thin slices
without being embedded before.
Saratov is very crumbly
and whoever tried to ship a Bjurbole, knows the hard challenge to find a
packing method, for the receiver not getting a box full of dust with
assorted chondrules.

Hmm, I remember back to the themes' list of the Casablanca conference.
Wasn't there a suggestion to hunt in desert especially for CIs too?

If I think how horribly crumbly and friable Ivuna or Orgueil is (not to
mention Tagish Lake as another C)
I'd guess that would be a bold venture.. as I would expect that those types
will decompose to dust within shortest time.
Can certainly be the reason also for the mere Antarctic record of those
types, can't it?

That, what me makes so perplex, is that on Mike's pictures it has soooo much
metal, here the links again:

http://meteoriteguy.com/sale-pics/mosscutb.JPG

http://meteoriteguy.com/sale-pics/mosscutd.JPG


I can't remember to have seen so much iron in a CO3.
So if it is a carbonaceous, it can be smth very special!

Buckleboo!
Martin


-----Urspr?ngliche Nachricht-----
Von: meteorite-list-bounces_at_meteoritecentral.com
[mailto:meteorite-list-bounces_at_meteoritecentral.com] Im Auftrag von
Meteoriteshow
Gesendet: Mittwoch, 30. August 2006 12:06
An: Jeff Pringle; M come Meteorite Meteorites;
meteorite-list_at_meteoritecentral.com
Betreff: Re: [meteorite-list] Moss classification speculation

Dear Matteo and All,

Actually I have noticed that CI, CM and CO carbonaceous chondrites can be
very fragile especially when fresh, in a way that when
touching them there are some black meteorite particles that will remain on
the fingers.
I agree that it is not the case with CVs for instance and that not all
carbonaceous chondrites will "behave" like that.
But to my opinion, only SOME of the carbonaceous chondrites will leave some
particles on the fingers when touching them, and NO
OTHER types I know will do the same. This means that when this happens, the
meteorite should be a carbonaceous.

This is just a clue of course, and only scientific analysis will give the
classification of Moss meteorites.

Just my 2 cents

Frederic Beroud
http://www.meteoriteshow.com
IMCA member # 2491 (http://www.imca.cc/)



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Received on Wed 30 Aug 2006 10:02:23 AM PDT