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| Lewis Cliff 88393 | |||||||||||||||||||||
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| Basic information | Name: Lewis Cliff 88393 This is an OFFICIAL meteorite name. Abbreviation: LEW 88393 Observed fall: No Year found: 1988 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  12.2 g | ||||||||||||||||||||
| Classification history: |
This is 1 of 75 approved meteorites classified as H3.7. [show all] Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||
| Comments: | Field number: 5196 | ||||||||||||||||||||
| Writeup |
Writeup from AMN 14(2):
Sample No.: LEW88393 Location: Lewis Cliff Field Number: 5196 Dimensions (cm): 2.5 x 2.3 x 1.6 Weight (g): 12.2 Meteorite Type: H3 chondrite
Macroscopic Description: Robbie Marlow The dark brown fusion crust which covers 95% of LEW88393 contains numerous regmaglypts. Abundant inclusions/chondrules with a range in size are visible in the heavily oxidized matrix.
Thin Section (.21 Description: Brian Mason The section shows a close-packed aggregate of chondrules and chondrule fragments, up to 2.9 mm across, in a small amount of finely granular matrix which contains a moderate amount of nickel-iron and troilite. Minor weathering is indicated by limonitic staining concentrated around metal grains. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa8-22, mean Fa17 (CV FeO is 20); pyroxene, Fs2-23. The amount of nickel-iron suggests H group, and the variability of olivine and pyroxene compositions type 3, hence the meteorite is classified as an H3 chondrite (estimated H3.7).
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| Data from: MB76 Table 2 Line 4243: |
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| References: | Published in Antarctic Meteorite Newsletter 14(2) (1991), 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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