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| Lewis Cliff 88315 | |||||||||||||||||||||
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| Basic information | Name: Lewis Cliff 88315 This is an OFFICIAL meteorite name. Abbreviation: LEW 88315 Observed fall: No Year found: 1988 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  25.1 g | ||||||||||||||||||||
| Classification history: |
This is 1 of 20 approved meteorites classified as H3.5. [show all] Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||
| Comments: | Field number: 6175 | ||||||||||||||||||||
| Writeup |
Writeup from AMN 14(2):
Sample No.: LEW88315 Location: Lewis Cliff Field Number: 6175 Dimensions (cm): 2.7 x 2.5 x 2.2 Weight (g): 25.1 Meteorite Type: H3 chondrite
Macroscopic Description: Cecilia Satterwhite Oxidation haloes are present in the omnipresent black/brown fusion crust. One large fracture penetrates the interior of this weathered meteorite. Inclusions and metal are visible in the dark brown matrix. Evaporite deposit is present.
Thin Section (,2) Description: Brian Mason. The section shows a close-packed aggregate of chondrules and chondrule fragments, up to 1.6 mm across, in a matrix of fine-grain olivine and pyroxene with a moderate amount of nickel-iron and troilite. Considerable weathering is indicated by limonitic staining and patches of brown limonite throughout the section. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa1-22, mean Fa15 (CV FeO is 41); pyroxene, Fs2-39. 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 H3.5).
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| Data from: MB76 Table 2 Line 4169: |
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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 43352 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||
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