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Elephant Moraine 83232
Basic information Name: Elephant Moraine 83232
     This is an OFFICIAL meteorite name.
Abbreviation: EET 83232
Observed fall: No
Year found: 1983
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 211 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 8(1)  (1985)  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 348 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Writeuphelp
Writeup from AMN 8(1):

Sample No.: EET83232

Location: Elephant Moraine

Weight (g): 211.2

Field No.: 2800

Dimensions (cm): 7 x 8 x 4.5

Meteorite Type: Polymict Eucrite

 

Macroscopic Description: Roberta Score

EET83232 looks similar to the other 1983 Elephant Moraine eucrites.

 

Thin Section (,2) Description: Jeremy Delaney

Typical polymict achondrite breccia with a variety of lithic clasts. Pyroxene clasts include pigeonites with micron-scale exsolution lamellae with both clouded and unclouded grains present. Some pyroxene clasts have clear zoning that mimics the irregular clast outlines suggesting that they were metamorphosed after brecciation. Feldspar clasts have shock features and some may be recrystallized. A few feldspar clasts have abundant inclusions of clinopyroxene up to 20 microns in diameter. Mafic clasts vary from coarse to very fine-grained and contain cloudy, exsolved pyroxene. Silica minerals in these clasts appear as both interstitial space filling settings and as coarse lathy crystals that appear to cross-cut the earlier texture. No orthopyroxene was recognized. This specimen is a polymict eucrite similar to EETA79011 and 79004.

Data from:
  MB76
  Table 2
  Line 1497:
Origin or pseudonym:Main icefield
Mass (g):211.2
Class:Eu "pm"
Weathering grade:B
Ferrosilite (mol%):43-52
Comments:79004 pairing group
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 8(1) (1985), JSC, Houston
Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
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Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (76° 11'S, 157° 10'E)
     Recommended::   (76° 17' 19"S, 157° 13' 55"E)
Note: the NHM and MetBase coordinates are 11.9 km apart

Statistics:
     This is 1 of 40129 approved meteorites from Antarctica (plus 4494 unapproved names)
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