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| Elephant Moraine 90021 | |||||||||||||||||||||||||
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| Basic information | Name: Elephant Moraine 90021 This is an OFFICIAL meteorite name. Abbreviation: EET 90021 Observed fall: No Year found: 1990 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  19.6 g | ||||||||||||||||||||||||
| Classification history: |
This is 1 of 622 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 15(1):
Sample No.: EET90021 Location: Elephant Moraine Field Number: 6351 Dimensions (cm): 3.2 x 3 x 1 Weight (g): 19.6 Meteorite Type: C2 chondrite
Macroscopic Description: Cecilia Satterwhite Seventy percent of the exterior of this carbonaceous chondrite is covered with fractured, black fusion crust. Cleaving this stone revealed an interior that is black in color and contains abundant light gray inclusions that are as large as 2 mm in diameter. A weathering rind is present.
Thin Section (,2) Description: Brian Mason The section consists largely of black opaque matrix, with occasional chondrules up to 0.3 mm across and numerous small grains of olivine and a little pyroxene. Microprobe analyses show that most of the olivine is close to Mg2SiO4 in composition, with a few more iron-rich grains; mean composition is Fa3, with range Fa1-28 (CV FeO is 241). Pyroxene composition is Fs1-3. The meteorite is a C2 chondrite.
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| Data from: MB76 Table 2 Line 2054: |
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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:
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Statistics: This is 1 of 43856 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||||||
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