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| Lewis Cliff 87248 | |||||||||||||||||||||
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| Basic information | Name: Lewis Cliff 87248 This is an OFFICIAL meteorite name. Abbreviation: LEW 87248 Observed fall: No Year found: 1987 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  13.8 g | ||||||||||||||||||||
| Classification history: |
This is 1 of 95 approved meteorites classified as L3.5. [show all] Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||
| Comments: | Field number: 4748 | ||||||||||||||||||||
| Writeup |
Writeup from AMN 12(1):
Sample No.: LEW87248 Location: Lewis Cliff Weight(g): 13.8 Field No.: 4748 Dimensions (cm): 2x2x1.5 Meteorite Type: L3 Chondrite
Macroscopic Description: René Martinez This small specimen shows abundant light and dark colored sharply defined chondrules in a dark gray matrix. It is 95% covered with fusion crust and appears relatively unweathered.
Thin, Section, (,3). Description: Brian Mason The section shows abundant chondrules and chondrule fragments, up to 1.5 mm across, in a dark matrix containing a few grains of nickel-iron and sulfide. A variety of chondrule types is present, including granular and porphyritic olivine and olivine-pyroxene, barred olivine, and cryptocrystalline pyroxene. Much of the pyroxene is polysynthetically twinned clinobronzite. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa0-18, mean Fa14 (CV FeO is 49); pyroxene, Fs1-22. 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 L3.5). | ||||||||||||||||||||
| Data from: MB76 Table 2 Line 3812: |
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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 40719 approved meteorites from Antarctica (plus 4494 unapproved names) | ||||||||||||||||||||
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