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Elephant Moraine 83227 | |||||||||||||||||||||
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Basic information | Name: Elephant Moraine 83227 This is an OFFICIAL meteorite name. Abbreviation: EET 83227 Observed fall: No Year found: 1983 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass: 1973 g | ||||||||||||||||||||
Classification history: |
This is 1 of 407 approved meteorites classified as Eucrite-pmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||
Writeup |
Writeup from AMN 8(1):
Sample No.: EET83227 Location: Elephant Moraine Weight (g): 1973.0 Field No.: 2957 Dimensions (cm): 13 x 10 x 9 Meteorite Type: Polymict Eucrite
Macroscopic Description: Roberta Score EET83227 has a rounded shape and the exterior surfaces contain numerous deep vugs. A few millimeter-sized patches of fusion crust remain on the gray exterior. Several different clasts, the largest being 2 cm in longest dimension, are visible on the exterior. These include eucritic clasts, black fine-grained clasts, pinkish-brown crystalline clasts, and black and white clasts. Both interior and exterior surfaces contain numerous oxidation halos as large as 1-cm in diameter. Interior surfaces are lighter gray in color than the exterior. This stone is similar to other 1983 Elephant Moraine eucrites.
Thin Section (,4) Description: Jeremy Delaney The section is a typical polymict eucrite with one large medium-grained mafic clast containing ophitic to radial pyroxene/plagioclase intergrowths. Pyroxene and feldspar in this clast both show zoning and have little clouding. Other clasts include breccia, shocked pyroxene and twinned feldspar. No maskelynite was seen. Coarse-grained lithic fragments, fine-grained granular mafic clasts and rare glassy fragments are also present. Three orthopyroxene grains more magnesian than En70 were located by microprobe, but diogenite-like clasts are very rare. | ||||||||||||||||||||
Data from: MB76 Table 2 Line 1492: |
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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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