| MetSoc Home Publications Contacts |
|
||
|
||
| Elephant Moraine 87720 | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basic information | Name: Elephant Moraine 87720 This is an OFFICIAL meteorite name. Abbreviation: EET 87720 Observed fall: No Year found: 1987 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  91.3 g | ||||||||||||||||||||||||
| Classification history: |
This is 1 of 34 approved meteorites classified as Ureilite-pmict. [show all] Search for other: Achondrites, Ureilites | ||||||||||||||||||||||||
| Writeup |
Writeup from AMN 12(3):
Sample No.: EET87720 Location: Elephant Moraine Dimensions (cm): 5x3x3 Field Number: 4579 Weight (g): 91.3 Meteorite Type: Ureilite
Macroscopic Description: Carol Schwarz The exterior surface of EET87720 is weathered smooth and has a thin, patchy fusion crust covering 70 percent. The interior matrix is dark and heavily oxidized. Abundant mineral grains, some as large as several millimeters in length, are present but are very rusty. Evaporite minerals were noted.
Thin Section (,3) Description: Brian Mason The section shows a cataclastic aggregate of anhedral olivine grains, up to 3.6 mm across, with minor pyroxene. Brown limonitic staining pervades the section. Under crossed polars the olivine grains are seen as a mosaic of tiny crystals, evidently a shock effect. Microprobe analyses show olivine of variable composition, Fa13-21, with a mean of Fa17; pyroxene consists in part of pigeonite, Wo8Fs9, and in part of augite, Wo35Fs13; one grain of plagioclase, An24, was analysed. The meteorite is a ureilite. | ||||||||||||||||||||||||
| Data from: MB76 Table 2 Line 1893: |
|
||||||||||||||||||||||||
| Catalogs: |
| ||||||||||||||||||||||||
| References: | Published in Antarctic Meteorite Newsletter 12(3) (1989), JSC, Houston Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
| ||||||||||||||||||||||||
Geography:
|
Statistics: This is 1 of 44543 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||||||
| Proximity search: | |||||||||||||||||||||||||
| Also see: |
This lists the most popular meteorites among people who looked up this meteorite.
| ||||||||||||||||||||||||
| Revision history: |
This lists important revisions made to data for this record.
| ||||||||||||||||||||||||