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| Lewis Cliff 88634 | |||||||||||||||||||||
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| Basic information | Name: Lewis Cliff 88634 This is an OFFICIAL meteorite name. Abbreviation: LEW 88634 Observed fall: No Year found: 1988 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  7.7 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: 6160 | ||||||||||||||||||||
| Writeup |
Writeup from AMN 16(2):
Sample No.: LEW88634 Location: Lewis Cliff Dimensions (cm): 2.5 x 1.9 x 1.0 Weight (g): 7.7 Meteorite Type: L3 chondrite
Macroscopic Description: Cecilia Satterwhite Fifty percent of this meteorite is covered with fusion crust and oxidation haloes are present. The dark-brown interior consists of abundant gray inclusions that range in size from 1 to 3 mm.
Thin Section (.5) Description: Brian Mason The section shows numerous chondrules and chondrule fragments, up to 3.6 mm across, in a black matrix containing small amounts of nickel-iron and troilite. The chondrules are mainly granular and porphyritic olivine and olivine-pyroxene, with a few cryptocrystalline pyroxene. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa1-33, mean Fa16 (CV FeO is 50); pyroxene, Fs6-18. The variability of olivine and pyroxene compositions indicate type 3, and the amount of nickel-iron L group, hence the meteorite is classified as an L3 chondrite (estimated L3.4).
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| Data from: MB76 Table 2 Line 4474: |
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| References: | Published in Antarctic Meteorite Newsletter 16(2) (1993), 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 43856 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||
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