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| Elephant Moraine 92022 | |||||||||||||||||||||
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| Basic information | Name: Elephant Moraine 92022 This is an OFFICIAL meteorite name. Abbreviation: EET 92022 Observed fall: No Year found: 1992 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  9.7 g | ||||||||||||||||||||
| Classification history: |
This is 1 of 453 approved meteorites classified as Howardite. [show all] Search for other: Achondrites, HED achondrites, and Howardites | ||||||||||||||||||||
| Writeup |
Writeup from AMN 17(1):
Sample No.: EET92022 Location: Elephant Moraine Dimensions (cm): 2.0 x 2.0 x 0.7 Weight (g): 9.7 Meteorite Type: Howardite
Macroscopic Description: Carol Schwarz The exterior of this tabular-shaped meteorite has shiny black fusion crust which has been weathered away in areas. The interior matrix is light gray. Very small gray, white and yellowish inclusions are abundant. This meteorite has only minor oxidation.
Thin Section (,2) Descrmtion: Brian Mason The section shows a brecciated structure, with clasts of orthopyroxene, pigeonite, and plagioclase up to 1.2 mm across in a comminuted groundmass of these minerals; two gabbroic clasts, 3.2 and 1.8 mm across, were noted. Microprobe analyses show a wide range in pyroxene compositions: Wo1-22, Fs20-53, En35-79; orthopyroxene compositions cluster around Wo3Fs24. Plagioclase composition is An90-95. The meteorite is a Howardite; mineral compositions and texture are similar to the EET87503 group of howardites, and the possibility of pairing should be considered.
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| Data from: MB79 Table 2 Line 222: |
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| References: | Published in Antarctic Meteorite Newsletter 17(1) (1994), JSC, Houston Published in Meteoritical Bulletin, no. 79, MAPS 31, A161-A174 (1996)
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Geography:
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Statistics: This is 1 of 44248 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||
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