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| Lewis Cliff 88663 | |||||||||||||||||||||||||
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| Basic information | Name: Lewis Cliff 88663 This is an OFFICIAL meteorite name. Abbreviation: LEW 88663 Observed fall: No Year found: 1988 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  14.5 g | ||||||||||||||||||||||||
| Classification history: |
This is 1 of 27 approved meteorites classified as L7. [show all] Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||
| Comments: | Field number: 6116 | ||||||||||||||||||||||||
| Writeup |
Writeup from AMN 15(1):
Sample No.: LEW88663 Location: Lewis Cliff Field Number: 6116 Dimensions (cm): 2.6 x 1.8 x 1.7 Weight (g): 14.5 Meteorite Type: Achondrite (?)
Macroscopic Description: Robbie Marlow Smooth, dull, dark brown fusion crust completely covers LEW88663. Cleaving this meteorite revealed an interior that is brown and black with a crystalline texture. A weathering rind that is about 1-2 mm thick is present. Oxidation is moderate to heavy in areas. No notable interior features were visible.
Thin Section (,2) Description: Brian Mason The section shows a granular aggregate of subequal amounts of olivine and pyroxene (average grain size 0.3 mm), with about 10% of plagioclase, 5% of troilite, and a trace of chromite. Brown limonitic staining pervades the section. Microprobe analyses give the following compositions: olivine, Fa24; pyroxene, Wo2Fs20; plagioclase, somewhat variable, An17-23. The olivine and pyroxene compositions match those of an L chondrite, but chondritic structure is absent and the meteorite has no nickel-iron. The meteorite is tenatively classified as an achondrite, but the composition does not seem to match that of any known achondrite.
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| Data from: MB76 Table 2 Line 4503: |
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| References: | Published in Antarctic Meteorite Newsletter 15(1) (1992), JSC, Houston Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
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Geography:
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Statistics: This is 1 of 40719 approved meteorites from Antarctica (plus 4494 unapproved names) | ||||||||||||||||||||||||
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