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Lewis Cliff 87053 | |||||||||||||||||||||
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Basic information | Name: Lewis Cliff 87053 This is an OFFICIAL meteorite name. Abbreviation: LEW 87053 Observed fall: No Year found: 1987 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass: 0.4 g | ||||||||||||||||||||
Classification history: |
This is 1 of 451 approved meteorites classified as Howardite. [show all] Search for other: Achondrites, HED achondrites, and Howardites | ||||||||||||||||||||
Comments: | Field number: 4063 | ||||||||||||||||||||
Writeup |
Writeup from AMN 12(1):
Sample No.: LEW87053 Location: Lewis Cliff Weight(g): 0.4 Field No.: 4063 Dimensions (cm): 0.8x0.8x0.4 Meteorite Type: Howardite
Macroscopic Description: René Martinet This small howardite appears very fresh and 40% of it is covered with black fusion crust. Plagioclase crystals are visible with the unaided eye.
Thin Section (,3) Description: Brian Mason, The section shows a microbreccia of plagioclase and pyroxene clasts, up to 0.8 mm in greatest dimension, together with a little opaque. Brown limonitic staining pervades the section. Microprobe analyses show the plagioclase variable in composition, An87-92, mean An91. Most of the pyroxene is iron-rich hypersthene, with compositions clustered around Wo2Fs55; a little augite is present, and a minor amount of diogenitic pyroxene, Wo2Fs20. The meteorite is a howardite, possibly paired with LEW87005 and LEW87015. | ||||||||||||||||||||
Data from: MB76 Table 2 Line 3630: |
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Catalogs: |
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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: |
Statistics: This is 1 of 44400 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||
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Revision history: |
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