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Elephant Moraine 90757
Basic information Name: Elephant Moraine 90757
     This is an OFFICIAL meteorite name.
Abbreviation: EET 90757
Observed fall: No
Year found: 1990
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 3.7 g
Antarctic Meteorite Newsletter:  AMN 17(1)  (1994)  Aubrite
Meteoritical Bulletin:  MB 79  (1996)  Aubrite
NHM Catalogue:  5th Edition  (2000)  Aubrite
MetBase:  v. 7.1  (2006)  Aubrite
Recommended:  Aubrite    [explanation]

This is 1 of 83 approved meteorites classified as Aubrite.   [show all]
Search for other: Achondrites, Aubrites, Enstatite achondrites, and Enstatite-rich meteorites
Writeup from AMN 17(1):

Sample No.: EET90757

Location: Elephant Moraine

Dimensions (cm): 2.2 x 1.1 x 1.0

Weight (g): 3.7

Meteorite Type: Aubrite


Macroscopic Description: Robbie Marlow

EET90757 is slightly weathered, slightly friable, and completely devoid of fusion crust. Cleaving this specimen revealed a pure white interior matrix with sulfide grains of various sizes scattered throughout.


Thin Section (,2) Description: Brian Mason

The section has brecciated texture, with pyroxene clasts up to 3 mm across in a comminuted groundmass of the same mineral. A little accessory nickel-iron and sulfide was noted. The meteorite appears to be unweathered. The pyroxene is essentially pure enstatite (FeO less than 0.1%, CaO 0.4-0.9%). One grain of plagioclase, Ab91Or4An5, was analyzed. The meteorite is an aubrite.


Data from:
  Table 2
  Line 38:
Origin or pseudonym:Texas Bowl
Mass (g):3.7
Weathering grade:A
Ferrosilite (mol%):0
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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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     Catalogue of Meteorites:   (76° 11'S, 157° 10'E)
     Recommended::   (76° 17' 9"S, 156° 29' 45"E)
Note: the NHM and MetBase coordinates are 21.2 km apart

     This is 1 of 44274 approved meteorites from Antarctica (plus 3802 unapproved names)
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