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Elephant Moraine 83250 | |||||||||||||||||||||||||
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Basic information | Name: Elephant Moraine 83250 This is an OFFICIAL meteorite name. Abbreviation: EET 83250 Observed fall: No Year found: 1983 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass: ![]() | ||||||||||||||||||||||||
Classification history: |
This is 1 of 544 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.: EET83250 Location: Elephant Moraine Weight (g): 11.5 Field No.: 1441 Dimensions (cm): <2 Meteorite Type: C2 Chondrite
Macroscopic Description: Roberta Score When EET83250 was first removed from its container, it existed in many pieces that could not be reassembled. It is, however, possible to distinguish between the exterior (many pieces containing fusion crust and evaporite deposit) and the interior surfaces, which are black with speckles of white inclusions. Rust spots and some evaporite deposits are visible on some of the interior pieces.
Thin Section (,3) Description: Brian Mason Only a few chondrules and chondrule fragments are present; the bulk of the meteorite consists of brown to black semi-opaque matrix, enclosing numerous small (0.1-mm and less) colorless birefringent grains, mostly olivine. The matrix also contains trace amounts of finely dispersed nickel-iron and sulfides. Well-preserved fusion crust rims part of the section. Microprobe analyses show most of the olivine close to forsterite in composition, with a few iron-rich grains (Fa0.3 - Fa22), mean Fa4). Pyroxene grains are rare; composition range is Fs2 - Fs14. The meteorite is a C2 chondrite. | ||||||||||||||||||||||||
Data from: MB76 Table 2 Line 1513: |
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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 40719 approved meteorites from Antarctica (plus 4494 unapproved names) | ||||||||||||||||||||||||
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