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Elephant Moraine 87532
Basic information Name: Elephant Moraine 87532
     This is an OFFICIAL meteorite name.
Abbreviation: EET 87532
Observed fall: No
Year found: 1987
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 193.5 g
Antarctic Meteorite Newsletter:  AMN 11(2)  (1988)  Eucrite
AMN 17(1)  (1994)  Eucrite-pmict
Meteoritical Bulletin:  MB 76  (1994)  Eucrite-pmict
NHM Catalogue:  5th Edition  (2000)  Eucrite-pmict
MetBase:  v. 7.1  (2006)  Eucrite-pmict
Recommended:  Eucrite-pmict    [explanation]

This is 1 of 391 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Writeup from AMN 11(2):

Sample No.: EET87532

Location: Elephant Moraine

Weight (g): 193.5

Field No.: 2631

Dimensions (cm): 9 x 4 x 4

Meteorite Type: Polymict Eucrite


Macroscopic Description: René Martinez

This eucrite is heavily weathered. A few dark fine-grained clasts are visible up to about 1 cm across. One coarse-grained monomineralic inclusion is about 2 cm in length. The matrix is fine-grained and dark-gray with a 0.5 cm thick weathering rind.


Thin Section (,8) Description: Brian Mason

The section shows a microbreccia, consisting largely of angular monomineralic pyroxene and plagioclase clasts up to 1.2 cm in maximum dimension, and a few lithic clasts, in a matrix of comminuted pyroxene and plagioclase. Clasts show basaltic to subophitic texture, except for one (6 mm across), which consists of large (up to 2.5 mm) rounded subhedral pyroxene (Wo7Fs33) grains in turbid brown glass. Microprobe analyses show pyroxene of variable composition: Wo2-40, Fs33-55, En 14-60; plagioclase is An91-93. The meteorite is a polymict eucrite.

Data from:
  Table 2
  Line 1705:
Origin or pseudonym:Main icefield
Mass (g):193.5
Class:Eu "pm"
Weathering grade:B/C
Ferrosilite (mol%):33-55
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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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     Catalogue of Meteorites:   (76° 11'S, 157° 10'E)
     Recommended::   (76° 17' 7"S, 157° 14' 42"E)
Note: the NHM and MetBase coordinates are 11.6 km apart

     This is 1 of 43700 approved meteorites from Antarctica (plus 3802 unapproved names)
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