Sample No.: ALH83100,1

Location: Allan Hills

Field No.: 2126

Weight (gms): 434.6

Meteorite Type: C2 Chondrite

Physical Description: Carol Schwarz

This is one fragment of a multi-fragment sample from the 1983 season. It is angular, rectangular-shaped, and extremely fractured, with several pieces falling off in handling. The surface is a dull black and fusion crust cannot be distinguished. Salt deposit has formed in some areas. A few (1 or 2) inclusions are barely discernible on the surface. The interior is dark and featureless. Dimensions: 8 x 7 x 6 cm

Petrographic Description: Brian Mason

The section shows a large number of clasts (up to 1 mm across) and mineral rains, and a few chondrules, in a minor amount of dark matrix. A little (about 1%) sulfide is present as minute grains, in part concentrated at the margins of chondrules. Nickel-iron occurs in trace amounts, some as small spherules. The clasts and most of the mineral grains consist of a serpentine-like mineral, probably an alteration of olivine. Microprobe analyses show there are a few grains of forsteritic olivine, and calicite grains were also identified. The meteorite is a C2 chondrite.