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| Lewis Cliff 87208 | |||||||||||||||||||||
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| Basic information | Name: Lewis Cliff 87208 This is an OFFICIAL meteorite name. Abbreviation: LEW 87208 Observed fall: No Year found: 1987 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  34.5 g | ||||||||||||||||||||
| Classification history: |
This is 1 of 51 approved meteorites classified as L3.4. [show all] Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||
| Comments: | Field number: 4647 | ||||||||||||||||||||
| Writeup |
Writeup from AMN 12(1):
Sample No.: LEW 87208 Location: Lewis Cliff Weight(g): 34.5 Field No.: 4647 Dimensions (cm): 4x3x1.5 Meteorite Type: L3 Chondrite
Macroscopic Description: Carol Schwarz About 60% of this specimen is covered with black, frothy fusion crust. The interior has been moderately weathered but many chondrules are visible. One gray inclusion is 5 mm across.
Thin Section (,4) Description: Brian Mason The section shows abundant chondrules and chondrule fragments, up to 3 mm across, in a small amount of black matrix containing a few grains of nickel-iron and troilite. A variety of chondrule types is present, including granular and porphyritic olivine and olivine-pyroxene, and cryptocrystalline pyroxene. Much of the pyroxene is polysynthetically twinned clinobronzite. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa1-19, mean Fa12 (CV FeO is 59); pyroxene, Fs0-27. The small amount of nickel-iron suggests L group, and the variability of olivine and pyroxene compositions type 3; hence the meteorite is classified as an L3 chondrite (estimated L3.4). | ||||||||||||||||||||
| Data from: MB76 Table 2 Line 3776: |
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| References: | Published in Antarctic Meteorite Newsletter 12(1) (1989), 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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