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Elephant Moraine 92004 | |||||||||||||||||||||||||
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Basic information | Name: Elephant Moraine 92004 This is an OFFICIAL meteorite name. Abbreviation: EET 92004 Observed fall: No Year found: 1992 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass: ![]() | ||||||||||||||||||||||||
Classification history: |
This is 1 of 127 approved meteorites classified as Eucrite-unbr. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||
Writeup![]() |
Writeup from AMN 16(2):
Sample No.: EET92004 Location: Elephant Moraine Dimensions (cm): 3.5 x 2.5 x 3.1 Weight (g): 34.7 Meteorite Type: Unbrecciated Eucrite
Macroscopic Description: Cecilia Satterwhite Eight percent of the exterior of this achondrite is covered with shiny, black fusion crust Some areas have flow lines present. Areas without fusion crust show a gray matrix with abundant white minerals. Minor weathering is visible. Chipping EET92004 revealed an interior that contains rounded blebs of dark green to black pyroxene and white plagioclase with fine-grained interstitial gray material. Oxidation is heavy in one area. A black glassy vein runs through the interior.
Thin Section (,7) Description: Brian Mason The section shows an aggregate of subequal amounts of plagioclase and pyroxene, with a trace of opaque material; it has a gabbroic texture, with subhedral to anhedral grains averaging about 0.6 mm across. Moderate shock is indicated by granulation of the pyroxene crystals and undulose extinction of the plagioclase. Pyroxene compositions cluster around Wo2Fs57, with a few more calcic grains ranging up to Wo18Fs43; plagioclase composition is An90-94. The meteorite is an unbrecciated eucrite.
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Data from: MB76 Table 2 Line 2846: |
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References: | Published in Antarctic Meteorite Newsletter 16(2) (1993), JSC, Houston Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
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Geography:![]() |
Statistics: This is 1 of 43700 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||||||
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