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Lewis Cliff 88679 | |||||||||||||||||||||
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Basic information | Name: Lewis Cliff 88679 This is an OFFICIAL meteorite name. Abbreviation: LEW 88679 Observed fall: No Year found: 1988 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass: 7.9 g | ||||||||||||||||||||
Classification history: |
This is 1 of 522 approved meteorites classified as Diogenite. [show all] Search for other: Achondrites, Diogenites, and HED achondrites | ||||||||||||||||||||
Comments: | Field number: 6187 | ||||||||||||||||||||
Writeup |
Writeup from AMN 15(1):
Sample No: LEW88679 Location: Lewis Cliff Field Number : 6187 Dimensions (cm): 1.8 x 1.5 x 1.2 Weight (g): 7.9 Meteorite Type: Diogenite
Macroscopic Description: Cecilia Satterwhite Thin shiny fusion crust covers most of LEW88679. Areas of light brown oxidation scattered throughout the gray matrix give the interior a mottled appearance. Single crystals of pyroxene were noted.
Thin Section (,2) Description: Brian Mason The section consists almost entirely of anhedral grains of pyroxene, up to 6 mm across; under crossed polars they show undulose extinction. Accessory amounts of isotropic plagioclase (maskelynite?) are present, as rounded grains 0.1-0.6 mm across; one grain of olivine was seen. Microprobe analyses show that the pyroxene has a fairly uniform composition, mean Wo3Fs26, With CaO 1.4-2.0%, Al2O3 0.9-1,1%- Plagioclase composition is An92; olivine composition is Fa30. The meteorite is a diogenite. It lacks the cataclastic texture of the other LEW diogenites (88008 and 88011).
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Data from: MB76 Table 2 Line 4519: |
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Catalogs: |
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References: | Published in Antarctic Meteorite Newsletter 15(1) (1992), 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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