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MISSING: 9.04 kilogram Sikhote-Alin shrapnel individual   More Info

An MPOD Classic
from 27 October 2013

ALH 77307   contributed by AMN   MetBul Link

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View all entries for   Meteorite (2)   Contributor (145)

181.3 grams.   CO3.0

Fall not observed.

Location Map of Antarctic Falls

AMN writes:
Macroscopic Description
The rounded specimen is covered with a dull black fusion crust 1-2 mm thick over post of the surface. Specimen is complete with the exception of one end where a fracture surface covers 1/8 of the specimenís total surface area. The fusion crust has polygonal fractures over most of the exterior surface. In a few places this fusion crust has been broken away revealing a black fine-grained matrix. Specimen shows several large fractures. On the surface neighboring one of these fractures there is a white material which may be an evaporite deposit. The side of the specimen that was in contact with the ice at the time of recovery is slightly reddish. Dimensions: 4.5 x 4.0 x 5.0 cm. Small, irregular white inclusions and several chondrules are apparent on a freshly broken surface.
Reclassification Notes (31,1)
Reclassified as CO3.0 Chondrite in AMN 31,1.

Reference: Grossman, J.N. and Brearley, A. (2005) MAPS 40, 87-122

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NWA 2968
John Divelbiss

This Month

Michael Mulgrew
 10/28/2019 12:49:17 PM
I doubt something this friable would have survived anywhere else on the planet besides Antarctica.
John Divelbiss
 10/27/2019 6:31:37 PM
the previous date had some good comments including Bernd's suggesting the crust area break formation seemed to be puzzle broken at triple junctions...is this nature's way ??? a curious phenomena...
Bernd Pauli
 10/27/2019 5:47:41 AM
A cosmic piece of "charcoal"!

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