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| Elephant Moraine 87528 | |||||||||||||||||||||
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| Basic information | Name: Elephant Moraine 87528 This is an OFFICIAL meteorite name. Abbreviation: EET 87528 Observed fall: No Year found: 1987 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  40.5 g | ||||||||||||||||||||
| Classification history: |
This is 1 of 451 approved meteorites classified as Howardite. [show all] Search for other: Achondrites, HED achondrites, and Howardites | ||||||||||||||||||||
| Writeup |
Writeup from AMN 11(2):
Sample No.: EET87528 Location: Elephant Moraine Weight (g): 40.5 Field No.: 2153 Dimensions (cm): 3 x 3 x 2.5 Meteorite Type: Howardite
Macroscopic Description: René Martinez This brecciated achondrite retains black fusion crust on about 50% of its exterior. Fractured surfaces appear fresh. Inclusions are mostly small mineral fragments of either pyroxene or plagioclase, but there are two conspicuous clasts: one about 1 cm x 0.5 cm and the other about 0.5 x 0.5 cm in cross-section. One was sampled for thin sectioning. The interior matrix is light gray.
Thin Section (,8; ,10) Description: Brian Mason EET87528,8 is a microbreccia of pyroxene (both orthopyroxene and pigeonite) and plagioclase clasts up to 2.2 mm in maximum dimension in a matrix of comminuted pyroxene and plagioclase. Orthopyroxene is more abundant than pigeonite, and occurs as larger clasts. EET87528,10 consists mainly of a large (9 x 7 mm) diogenite clast, bordered by material like 87528,8. Pyroxene compositions show the following range: Wo1-24, Fs21-60, En31-76; pyroxene in the diogenite clast is slightly variable, averaging Wo2Fs23. Plagioclase composition is An80-95. The meteorite is a howardite, but appears to differ from EET87503 and other howardites in that group. | ||||||||||||||||||||
| Data from: MB76 Table 2 Line 1701: |
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| References: | Published in Antarctic Meteorite Newsletter 11(2) (1988), 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 44547 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||
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| Revision history: |
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