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Elephant Moraine 83389
Basic information Name: Elephant Moraine 83389
     This is an OFFICIAL meteorite name.
Abbreviation: EET 83389
Observed fall: No
Year found: 1983
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 19.2 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 10(2)  (1987)  C2
Meteoritical Bulletin:  MB 76  (1994)  C2
NHM Catalogue:  5th Edition  (2000)  CM2
MetBase:  v. 7.1  (2006)  CM2
Antarctic Meteorite Newsletter:  AMN 31(1)  (2008)  CM2
Recommended:  CM2    [explanation]

This is 1 of 541 approved meteorites classified as CM2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites
Writeuphelp
Writeup from AMN 10(2):

Sample No.: EET83389

Location: Elephant Moraine

Weight (g): 19.2

Field No.: 1358

Dimensions (cm): 2.5 x 2.5 x 2

Meteorite Type: C2 Chondrite

 

Macroscopic Description: Roberta Score

Exterior is polygonally fractured and brown in color. The clastic nature of this rock is obvious from the exterior. Interior is a dark dusty gray with many semi-rounded inclusions that range in diameter from <1 mm to 2 mm. Most of these inclusions are cream colored. This stone is not very dense.

 

Thin Section (,2) Description: Brian Mason

The section shows numerous chondrules and irregular granular aggregates in a translucent brown isotropic matrix. Nickel-iron is present in trace amounts as minute grains in a few chondrules and aggregates; no troilite was seen. Most olivine grains are close to the magnesian end-member in composition, but a few iron-rich ones are present; pyroxene compositions are similar. The meteorite is a C2 chondrite.

Data from:
  MB76
  Table 2
  Line 1647:
Origin or pseudonym:Main icefield
Mass (g):19.2
Class:C2
Weathering grade:A/B
Fayalite (mol%):0.2-37
Ferrosilite (mol%):1-13
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° 17' 58"S, 157° 14' 26"E)
Note: the NHM and MetBase coordinates are 13.1 km apart

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