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Elephant Moraine 83283
Basic information Name: Elephant Moraine 83283
     This is an OFFICIAL meteorite name.
Abbreviation: EET 83283
Observed fall: No
Year found: 1983
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 57.3 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 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.: EET83283

Location: Elephant Moraine

Weight (g): 57.2

Field No.: 1320

Dimensions (cm): 6 x 2.5 x 3

Meteorite Type: Polymict Eucrite

 

Macroscopic Description: Roberta Score

This eucrite is typical of the other 1983 Elephant Moraine eucrites.

 

Thin Section (,3) Description: Jeremy Delaney

A typical polymict achondrite with lithic and mineral clasts similar to other Elephant Moraine polymict eucrites. Some pyroxene clasts appear to be shocked orthopyroxene (En55-65) but most are pigeonitic with fine exsolution. None are as magnesian as diogenitic pyroxene. Lithic clasts are generally fine-grained basalts and breccia clasts. The matrix of this section is very dark and full of holes and cracks suggesting that it has been severely weathered. Specimen is generally similar to EETA79004 and 79011.

Data from:
  MB76
  Table 2
  Line 1546:
Origin or pseudonym:Main icefield
Mass (g):57.3
Class:Eu "pm"
Weathering grade:B
Ferrosilite (mol%):33-48
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' 12"S, 157° 14' 53"E)
Note: the NHM and MetBase coordinates are 11.7 km apart

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