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| Lewis Cliff 87093 | |||||||||||||||||||||
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| Basic information | Name: Lewis Cliff 87093 This is an OFFICIAL meteorite name. Abbreviation: LEW 87093 Observed fall: No Year found: 1987 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  7 g | ||||||||||||||||||||
| Classification history: |
This is 1 of 69 approved meteorites classified as L3.8. [show all] Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||
| Comments: | Field number: 4206 | ||||||||||||||||||||
| Writeup |
Writeup from AMN 15(1):
Sample No.: LEW87093 Location: Lewis Cliff Field Number: 4206 Dimensions (cm): 2.5 x 1.5 x 1 Weight (g): 7.0 Meteorite Type: L3 chondrite
Macroscopic Description: Cecilia Satterwhite LEW87093 is extremely weathered. Some reddish-brown crust remains and no features can be seen through the reddish brown oxidation.
Thin Section (,2) Description: Brian Mason The section shows a close-packed aggregate of chondrules and chondrule fragments, up to 2.1 mm across, in a matrix of fine-grained olivine and pyroxene and a little nickel-iron and troilite. Weathering is extensive, with limonitic staining and areas of brown limonite throughout the section. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa11-21, mean Fa17 (CV FeO is 19); pyroxene, Fs4-30. The variability of olivine and pyroxene compositions suggests type 3, and the amount of nickel-iron indicates L group, hence the meteorite is classified as an L3 chondrite (estimated L3.8).
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| Data from: MB76 Table 2 Line 3669: |
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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 43857 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||
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