[meteorite-list] NWA 4808 Diogenite Breccia and NWA 4473

From: Martin Altmann <altmann_at_meteoritecentral.com>
Date: Sun, 21 Oct 2007 14:02:23 +0200
Message-ID: <003e01c813da$3e0c2240$177f2a59_at_name86d88d87e2>

Hi Bernd,

I can confirm, that NWA 4808 and 4473 are paired (were classified at the
same place). We didn't know, how to act correctly, as the owner of 4473,
insisted in spring, that he wished, that we never should mention paired
material in his possession or his name in our Ads. Like he seems to do too,
when he has material for sale paired with ours, if I look here and there
into ebay. NWA 4808 isn't listed in the Bulletin yet, therefore that little
dilemma.

Anyway it is fascinating material. Additionally to the observations you
made, this meteorite has some more unusual aspects. So no eucritic
components were found in those stones, but fragments of three different
diogenitic precursors. Therefore it must have a somewhat unusual impact
history.

Our "special" was sold out the same day, we found a few more slices in our
stock, now only 3 or 4 small ones are left. As small as NWA 4808 was, it was
quite heterogeneous, macroscopically the slices were quite different from
each other.

If someone is looking for larger surfaces, I saw Mike Cottingham having NWA
4473 on ebay some weeks ago, perhaps he has some left.

Am I the only one, who can't await, that Dawn will arrive at Vesta?
Best!
Martin


-----Urspr?ngliche Nachricht-----
Von: meteorite-list-bounces at meteoritecentral.com
[mailto:meteorite-list-bounces at meteoritecentral.com] Im Auftrag von
bernd.pauli at paulinet.de
Gesendet: Freitag, 19. Oktober 2007 20:07
An: meteorite-list at meteoritecentral.com
Betreff: [meteorite-list] NWA 4808 Diogenite Breccia and NWA 4473

Hello again,

I just see that my piece of the NWA 4473 polymict diogenite that
I purchased from Greg Hup? has some resemblance to NWA 4808 and
both diogenites may possibly be paired. The only difference is that
the crystal faces of the orthopyroxene mineral clasts in NWA 4473
are less well developed (in my piece!). In oher words, most pyroxene
cystals in my NWA 4473 piece are anhedral and a few are subhedral.

Bernd

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Received on Sun 21 Oct 2007 08:02:23 AM PDT