[meteorite-list] AD - Meteorites for sale - NEW very unusual ureilite

From: Greg Catterton <star_wars_collector_at_meteoritecentral.com>
Date: Wed, 9 May 2012 13:58:13 -0700 (PDT)
Message-ID: <1336597093.90169.YahooMailNeo_at_web46407.mail.sp1.yahoo.com>

"The very high shock experienced by this specimen (causing complete
recrystallization of silicates and evidently generation of significant
amounts of microdiamond) is unusual among ureilites."
Small adamantine crystals of
diamond were extracted from the stone ... coarse-grained aggregate of
olivine and orthopyroxene with finer grained interstitial regions
containing opaque material, calcite and limonite. Some thin calcite
veinlets cross-cut the specimen. Both olivine and pyroxene are
completely recrystallized to aggregates of myriad tiny, polygonal
subgrains.

NWA 6871...


?http://stores.shop.ebay.com/wanderingstarmeteorites



Greg Catterton
www.wanderingstarmeteorites.com
Received on Wed 09 May 2012 04:58:13 PM PDT