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Elephant Moraine 83236
Basic information Name: Elephant Moraine 83236
     This is an OFFICIAL meteorite name.
Abbreviation: EET 83236
Observed fall: No
Year found: 1983
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 6.4 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 8(1)  (1985)  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 341 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Writeuphelp
Writeup from AMN 8(1):

Sample No.: EET83236

Location: Elephant Moraine

Weight (g): 6.4

Field No.: 2761

Dimensions (cm): 2 x 2 x 1

Meteorite Type: Eucrite

 

Macroscopic Description: Roberta Score

Shiny black fusion crust containing flow marks covers 60% of EET83236. The interior is bluish-gray with numerous white and dark gray clasts. Several oxidation halos were noted.

 

Thin Section (,2) Description: Jeremy Delaney

A lightly brecciated medium-grained eucrite containing pyroxene in an ophitic to subradiate texture with generally lathy feldspar. The pyroxene is generally exsolved pigeonite with occasional "herring-bone" textures preserved. Both pyroxene and plagioclase have clouding in some crystals. Some pyroxene grains are quite clear but most are heavily clouded. Feldspar is often clouded in patches and has mottled extinction that in places is nearly isotropic. It has, therefore, been substantially shocked. Interstitial glassy silica minerals, troilite, chromite and ilmenite are also present. Pyroxene is En36Wo2.6 to En31Wo40 and feldspar is An89.

Data from:
  MB76
  Table 2
  Line 1500:
Origin or pseudonym:Main icefield
Mass (g):6.4
Class:Eu "pm"
Weathering grade:B
Ferrosilite (mol%):25-29
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° 19' 41"S, 157° 12' 7"E)
Note: the NHM and MetBase coordinates are 16.2 km apart

Statistics:
     This is 1 of 39173 approved meteorites from Antarctica (plus 5051 unapproved names)
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