Sample No.: LEW87009

Location: Lewis Cliff

Weight (g): 50.5

Field No.: 4413

Dimensions (cm): 5 x 3 x 2

Meteorite Type: C6 Chondrite

Macroscopic Description: Carol Schwarz

About 85% of the exterior of this specimen is covered with fusion crust. Salt deposit has formed in some areas. Areas devoid of fusion crust are greenish and weathered. The interior is greenish-gray with no clasts evident. There is a dark weathering rind along one edge.

Thin Section (,2) Description: Brian Mason

The section shows an aggregate of anhedral grains (0.05-0.3 mm) of olivine with minor plagioclase; blebs of magnetite (0.01-0.03 mm, sometimes aggregated into larger masses) are scattered throughout. Traces of sulfide are present. A black glassy veinlet, 0.08 mm wide, crosses the section. Some of the silicate aggregates have a vaguely chondritic form. Microprobe analyses give the following compositions: olivine, Fa31; plagioclase, An44-48; orthopyroxene was not found, but one grain of augite, Wo44Fs12, was analyzed. Mineral compositions resemble those in C4 chondrites, but the relatively coarse grain size and the practical absence of chondritic structure indicates a higher type, hence the meteorite is tentatively classified as a C6 chondrite.