Sample No. LEW88146

Location: Lewis Cliff

Dimensions (cm): 1.5 x 1.4 x 1.0

Field Number: 4476

Weight (g): 5.0

Meteorite Type: L3 chondrite

Macroscopic Description: Cecilia Satterwhite

Thirty percent of this meteorite fragment is covered with black fusion crust. Areas devoid of fusion crust are yellowish-green in color. The interior shows two distinct lithologies with a sharp contact between them, each making up 50% of the exposed interior. One lithology has light to medium gray matrix with abundant dark chondrules/inclusions. The other lithology has dark gray matrix with abundant light chondrules/inclusions.

Thin Section (,2) Description: Brian Mason

The section shows a close-packed aggregate of chondrules and chondrule fragments, up to 2.9 mm across; some of the chondrules are rimmed with granules of nickel-iron and troilite. The matrix is fine-grained olivine and pyroxene, with a minor amount of nickel-iron and troilite. The meteorite is almost unweathered. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa14-28 mean Fa22 (CV FeO is 35); pyroxene, Fs8-21. The amount of nickel-iron indicates L group, and the variability of olivine and pyroxene compositions type 3. Hence the meteorite is classified as an L3 chondrite (estimated L3.6).