Sample No.: LEW88714

Location: Lewis Cliff

Field Number: 5654

Dimensions (cm): 3.5 x 3.5 x 1

Weight (g): 22.6

Meteorite Type: E6 chondrite

Smooth, shiny, brown fusion crust covers one half of this meteorite. The interior matrix is fine-grained. Oxidation is heavy, giving the interior a brown color.

Thin Section (,2) Description: Brian Mason

Only vague traces of chondritic structure can be distinguished; the section consists largely of fine-grained pyroxene (grain size 0.06-0.3 mm), with a moderate amount of nickel-iron and minor troilite. Trace amounts of a colorless highly birefringent mineral, probably sinoite, were noted. Weathering is extensive, with brown limonitic staining throughout the section. Microprobe analyses show the pyroxene is almost pure MgSiO3 (FeO 0.1-0.4%, CaO 0.5-0.6%); a little plagioclase, An13, was found. The nickel-iron contains about 1.5% Si. The meteorite is an E6 chondrite; it is closely similar to LEW87119 and LEW88135, with which it may be paired. The other LEW E6 chondrite, 88180, is distinctly different, and almost unweathered.