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Elephant Moraine 83334
Basic information Name: Elephant Moraine 83334
     This is an OFFICIAL meteorite name.
Abbreviation: EET 83334
Observed fall: No
Year found: 1983
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 2.5 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 10(2)  (1987)  C2
AMN 17(1)  (1994)  CM1-2
Meteoritical Bulletin:  MB 76  (1994)  CM1-2
NHM Catalogue:  5th Edition  (2000)  CM1-2
MetBase:  v. 7.1  (2006)  CM1
Antarctic Meteorite Newsletter:  AMN 31(1)  (2008)  CM1
Recommended:  CM1    [explanation]

This is 1 of 26 approved meteorites classified as CM1.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 1), CM chondrites, and CM-CO clan chondrites
Writeuphelp
Writeup from AMN 10(2):

Sample No.: EET83334

Location: Elephant Moraine

Weight (g): 2.5

Field No.: 2706

Dimensions (cm): 1.5 x 1.5 x 1

Meteorite Type: C2 Chondrite

 

Macroscopic Description: Roberta Score

A small amount of fusion crust remains on this otherwise black, massive stone.

 

Thin Section (,4) Description: Brian Mason

The section shows a few chondrules (up to 0.9 mm across) and numerous small mineral grains in an opaque matrix. The chondrules and mineral grains consist almost entirely of pale green weakly birefringent serpentinous material. Trace amounts of nickel-iron are present as minute grains. Microprobe analyses show serpentine of variable composition, averaging SiO2 39.6, Al2O3 3.3, FeO 15.3, MgO 27.9%; some small grains of calcite and dolomite were found. The meteorite is a C2 carbonaceous chondrite; the pervasive serpentinization appears to distinguish it from other Elephant Moraine C2 chondrites.

Data from:
  MB76
  Table 2
  Line 1594:
Origin or pseudonym:Main icefield
Mass (g):2.5
Class:CM1-2
Weathering grade:A
Fayalite (mol%):-
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 10(2) (1987), 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° 18' 7"S, 157° 16' 22"E)
Note: the NHM and MetBase coordinates are 13.5 km apart

Statistics:
     This is 1 of 38940 approved meteorites from Antarctica (plus 5051 unapproved names)
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