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Elephant Moraine 90234 | |||||||||||||||||||||||||
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Basic information | Name: Elephant Moraine 90234 This is an OFFICIAL meteorite name. Abbreviation: EET 90234 Observed fall: No Year found: 1990 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass: ![]() | ||||||||||||||||||||||||
Classification history: |
This is 1 of 207 approved meteorites classified as CK5. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites | ||||||||||||||||||||||||
Writeup![]() |
Writeup from AMN 15(2):
Sample No.: EET90234; 90247; 90428 Location: Elephant Moraine Field Number: 7320; 7334;.7287 Dimensions (cm): 2.3 x 2.1 x 1.1; 4 x 2.5 x 2.5; 2.0 x 1.7 x 0.7 Weight (g): 8.5; 37.1; 7.3 Meteorite Type: C4 chondrite
Macroscopic Description: Robbie Marlow Fractured, dull, black fusion crust covers up to 50% of each of these carbonaceous chondrite fragments. Areas devoid of fusion crust are greenish gray in color. EET90234 and 90248 are more weathered than 90247. 90234 and 90248 have a dark gray interior and contain evaporite deposit. 90247 is light gray, has a thin weathering rind and several millimeter-sized dark gray inclusions.
Thin Section (EET90234,5) Description; Brian Mason A few well-defined chondrules, up to 1.2 mm across, are present, but most of the section consists of anhedral olivine grains, 0.05-0.1 mm across, with minor plagioclase and opaques. The opaques consist largely of magnetite and pentlandite; nickel-iron is absent. Microprobe analyses show olivine of uniform composition, Fa28; one grain of diopside, Wo46 Fs7, and one grain of plagioclase, An49, were analyzed. The meteorite is classified as a C4 chondrite, and probably belongs to the EET87507 pairing group. EET90247,3 and EET90428,2 are similar in all respects.
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Data from: MB76 Table 2 Line 2266: |
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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 44048 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||||||
Proximity search: |