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

[Greg Catterton]

"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...


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Greg Catterton
www.wanderingstarmeteorites.com