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Elephant Moraine 90542 | |||||||||||||||||||||
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Basic information | Name: Elephant Moraine 90542 This is an OFFICIAL meteorite name. Abbreviation: EET 90542 Observed fall: No Year found: 1990 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass: 5 g | ||||||||||||||||||||
Classification history: |
This is 1 of 69 approved meteorites classified as L3.8. [show all] Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||
Writeup |
Writeup from AMN 15(2):
Sample No.: EET90542 Location: Elephant Moraine Field Number: 6454 Dimensions (cm): 1.6 x 1.6 x 1 Weight (g): 5.0 Meteorite Type: L3 chondrite
Macroscopic Description: Cecilia Satterwhite, Black, frothy fusion crust covers 50% of this stone. Light and dark inclusions/chondrules are visible in the heavily oxidized dark gray matrix.
Thin Section (,2) Description Brian Mason The section shows numerous chondrules and chondrule fragments, up to 1.5 mm across, in a granular matrix consisting largely of olivine and pyroxene with a little nickel-iron and troilite. Minor weathering is indicated by limonitic staining around metal grains. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa9-26 , mean Fa22 (CV FeO is 19); pyroxene, Fs8-18. The variability of olivine and pyroxene compositions indicates type 3, and the small amount of nickel-iron L group, hence the meteorite is classified as an L3 chondrite (estimated L3.8).
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Data from: MB76 Table 2 Line 2573: |
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Catalogs: |
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References: | Published in Antarctic Meteorite Newsletter 15(2) (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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