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| Lewis Cliff 87284 | |||||||||||||||||||||||||
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| Basic information | Name: Lewis Cliff 87284 This is an OFFICIAL meteorite name. Abbreviation: LEW 87284 Observed fall: No Year found: 1987 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  38.6 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: 4702 | ||||||||||||||||||||||||
| Writeup |
Writeup from AMN 12(3):
Sample No.: LEW87284 Location: Lewis Cliff Dimensions (cm): 5x3x15 Field Number: 4702 Weight (g): 38.6 Meteorite Type: L3 chondrite
Macroscopic Description: Cecilia Satterwhite Fusion crust covers almost the entire specimen. The exposed interior contains dark matrix with abundant light colored inclusions; the largest is 0.5 cm in the longest dimension.
Thin Section (,2) Description: Brian Mason The section shows abundant chondrules and chondrule fragments, up to 2.5 mm across, in a black matrix which contains some troilite and a little nickel-iron. A variety of chondrule types is present, including granular and porphyritic olivine and fine-grained radiating pyroxene. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa1-16, mean Fa11 (CV FeO is 36); pyroxene, Fs3-29. 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 L3.6). | ||||||||||||||||||||||||
| Data from: MB76 Table 2 Line 3848: |
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| References: | Published in Antarctic Meteorite Newsletter 12(3) (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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