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| Elephant Moraine 87746 | |||||||||||||||||||||||||||||
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| Basic information | Name: Elephant Moraine 87746 This is an OFFICIAL meteorite name. Abbreviation: EET 87746 Observed fall: No Year found: 1987 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  142.3 g | ||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 21 approved meteorites classified as EH4. [show all] Search for other: EH chondrites, Enstatite chondrites, Enstatite chondrites (type 4-7), and Enstatite-rich meteorites | ||||||||||||||||||||||||||||
| Writeup |
Writeup from AMN 12(3):
Sample No.: EET87746 Location: Elephant Moraine Dimensions (cm): 4x4x3.5 Field Number: 4587 Weight (g): 142.3 Meteorite Type: E4 chondrite
Macroscopic Description: Carol Schwarz EET87746 is extremely weathered although black fusion crust still covers ~60% of the exterior. Areas devoid of fusion crust are polished. Deep fractures penetrate the interior of the stone. The exposed interior is extremely oxidized. Some evaporite minerals were noted.
Thin Section (,3) Description: Brian Mason The section shows abundant chondrules, chondrule fragments, and mineral grains in an opaque matrix consisting largely of nickel-iron and sulfides; the metal grains are extensively weathered to limonite. Chondrules are usually small, averaging 0.6 mm across, but a few larger ones, up to 1.5 mm across, are present. The chondrules and mineral grains are mostly clinoenstatite, but a little olivine is present. Mineral compositions are somewhat variable: olivine, Fa1-2; pyroxene, Fs0.6-2, averaging Fs1.2: the nickel-iron contains 2.0% Si. The meteorite is classified as an E4 chondrite. | ||||||||||||||||||||||||||||
| Data from: MB76 Table 2 Line 1919: |
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| References: | Published in Antarctic Meteorite Newsletter 12(3) (1989), 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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