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Elephant Moraine 83224 | |||||||||||||||||||||||||
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Basic information | Name: Elephant Moraine 83224 This is an OFFICIAL meteorite name. Abbreviation: EET 83224 Observed fall: No Year found: 1983 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass: 8.6 g | ||||||||||||||||||||||||
Classification history: |
This is 1 of 635 approved meteorites classified as CM2. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites | ||||||||||||||||||||||||
Writeup |
Writeup from AMN 8(1):
Sample No.: EET83224 Location: Elephant Moraine Weight (g): 8.6 Field No.: 2785 Dimensions (cm): 2.5 x 2.5 x 1.5 Meteorite Type: C2 Chondrite
Macroscopic Description: Roberta Score One quarter of EET83224 is covered by dull fractured fusion crust. The exterior surfaces range in color from black to brown. Chondrules are present in the black matrix as are many small irregular shaped white inclusions.
Thin Section (,3) Description: Brian Mason The thin section shows a few chondrules up to 0.8-mm in diameter, consisting of granular olivine sometimes together with minor polysynthetically twinned clinopyroxene. Scattered through the opaque to translucent brown to black matrix are numerous irregular enclaves (possibly chondrule fragments) and small (0.1 mm or less) colorless birefringent grains, mostly olivine. Accessory nickel-iron and trace amounts of sulfide are dispersed throughout the section as minute grains. Microprobe analyses give the following compositions: olivine, Fa0.2 - Fa41, mean Fa8; pyroxene is generally near clinoenstatite in composition (FeO 0.4-1.0%). The meteorite is a C2 chondrite. | ||||||||||||||||||||||||
Data from: MB76 Table 2 Line 1489: |
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Catalogs: |
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References: | Published in Antarctic Meteorite Newsletter 8(1) (1985), 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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