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| Lewis Cliff 88783 | |||||||||||||||||||||
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| Basic information | Name: Lewis Cliff 88783 This is an OFFICIAL meteorite name. Abbreviation: LEW 88783 Observed fall: No Year found: 1988 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  9.8 g | ||||||||||||||||||||
| Classification history: |
This is 1 of 15 approved meteorites classified as LL3.6. [show all] Search for other: LL chondrites (type 3), LL chondrites, Ordinary chondrites (type 3), and Ordinary chondrites | ||||||||||||||||||||
| Writeup, from AMN 15(1): |
Sample No.: LEW88783 Location: Lewis Cliff Field Number: 5372 Dimensions (cm): 2.5 x 2.0 x 1.5 Weight (g): 9.8 Meteorite Type: LL3 chondrite
Macroscopic Description: Robbie Marlow No fusion crust remains on this weathered stone. Evaporite deposit is present on the exterior surface. The interior is red brown with small areas of gray matrix scattered throughout. One millimeter sized orange inclusion was noted. Oxidation is heavy.
Thin Section (,2) Description: Brian Mason The section shows a close-packed aggregate of chondrules and chondrule fragments, up to 2.9 mm across, in a minimum amount of black opaque matrix which contains accessory amounts of nickel-iron and troilite. Minor weathering is indicated by scattered areas of brown limonite. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa7-34, mean Fa18 (CV FeO is 38); pyroxene, Fs1-18. The variability of olivine and pyroxene compositions indicates type 3, and the amount of nickel-iron LL group, hence the meteorite is classified as an LL chondrite (estimated LL3.6).
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| Data from: MB76 Table 2 Line 4622: |
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| References: | Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994) Published in Antarctic Meteorite Newsletter 15(1) (1992), JSC, Houston
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Geography:
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Statistics: This is 1 of 25287 approved meteorites from Antarctica (plus 9773 unapproved names) | ||||||||||||||||||||
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