Sample No.: LEW85339

Location: Lewis Cliff

Dimensions (cm): 3.5x3x2

Field Number: 2077

Weight (g): 28.8

Meteorite Type: L3 chondrite

Macroscopic Description: René Martinet

Polygonally fractured fusion crust completely covers this small specimen. The interior is light gray with chondrules and other inclusions measuring up to ~3 mm in diameter. One dark haloed inclusion (metallic?) is ~7 mm across.

Thin Section (,3) Description: Brian Mason

The section shows a close-packed aggregate of chondrules and chondrule fragments, up to 2.1 mm across, in a minimum amount of dark matrix which contains some troilite and a little nickel-iron. A variety of chondrule types is present, including granular and porphyritic olivine and olivine-pyroxene, barred olivine, and fine-grained radiating pyroxene. Considerable weathering is indicated by brown limonitic staining throughout the section. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa1-30, mean Fa14 (CV FeO is 59); pyroxene, Fs3-13. The small amount of nickel-iron suggests L group, and variability of olivine and pyroxene compositions type 3; hence the meteorite is classified as a L3 chondrite (estimated L3.4).