AW: [meteorite-list] Dhofar vs. NWA meteorites

From: Phil Morgan <pkmorgan_at_meteoritecentral.com>
Date: Fri Jun 9 00:07:45 2006
Message-ID: <009d01c68b72$4267f680$0307a8c0_at_Gateway500s>

Hi Bob,
Are they really shock veins or simply some sort of weathering deposit in
small cracks as they disintegrate into extra-terrestrial soil?

I don't have any idea how this would work exactly or the substances
involved, but I've always thougth them to be a by-product of weathering
rather than shock.

Regards to all,
Phil
----- Original Message -----
From: <lakewind_at_infionline.net>
To: <Meteorite-list_at_meteoritecentral.com>
Sent: Thursday, June 08, 2006 9:15 AM
Subject: RE: AW: [meteorite-list] Dhofar vs. NWA meteorites


Hi Martin,
Thanks for your observations on Dhofar vs. NWA. What you wrote makes sense.
However I still wonder why many of the Dhofar chondrites have so many fine
shock
veins compared to the NWAs. Any thoughts?
Bob


Original Message:
-----------------
From: Martin Altmann altmann_at_meteorite-martin.de
Date: Thu, 8 Jun 2006 14:36:29 +0200
To: Meteorite-list_at_meteoritecentral.com, lakewind@infionline.net
Subject: AW: [meteorite-list] Dhofar vs. NWA meteorites


Hi Bob,

>So we have two reasons:
The more harsh weathering conditions in Oman
and a economical one, that from the NWA one sees only the tip of the
iceberg's weathering scale, cause the more rotten stuff doesn't sell.

Buckleboo!
Martin


-
Hi all,
I've seen a good number of Dhofar and NWA common chondrites and
I've noticed that there are many among the Dhofars which exhibit highly
weathered interiors laced with rich, thread-like shock veins. These
veins seem to be far less common in NWA chondrites and I wonder
why. Can anyone shed light on this little mystery (for me)? Thank you!
Bob
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Received on Thu 08 Jun 2006 11:10:27 PM PDT