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Elephant Moraine 83355
Basic information Name: Elephant Moraine 83355
     This is an OFFICIAL meteorite name.
Abbreviation: EET 83355
Observed fall: No
Year found: 1983
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 66.2 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 10(2)  (1987)  C2
AMN 17(1)  (1994)  C2-ung
Meteoritical Bulletin:  MB 76  (1994)  C2-ung
NHM Catalogue:  5th Edition  (2000)  C2
MetBase:  v. 7.1  (2006)  C2-ung
Recommended:  C2-ung    [explanation]

This is 1 of 19 approved meteorites classified as C2-ung.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), and Ungrouped chondrites
Writeuphelp
Writeup from AMN 10(2):

Sample No.: EET83355

Location: Elephant Moraine

Weight (g): 66.2

Field No.: 2748

Dimensions (cm): 5.5 x 4 x 2.5

Meteorite Type: C2 Chondrite

 

Macroscopic Description: Roberta Score

Fusion crust covers 50% of this fragment. Areas devoid of fusion crust are polished and iridescent. White inclusions are scattered throughout the black matrix. Oxidation is present.

 

Thin Section (,2) Description: Brian Mason

The section shows numerous chondrules (up to 0.9 mm across) and irregular granular aggregates in a moderate amount of black opaque matrix. The matrix contains numerous small grains of nickel-iron and troilite. Most of the chondrules consist of granular olivine and olivine-pyroxene. Microprobe analyses show that much of the olivine is of forsteritic composition, but occasional iron-rich grains are present (up to Fa28, mean olivine composition is Fa6). Most of the pyroxene has composition in the range Fs0-1, but ranges up to Fs9. The meteorite is a C2 chondrite; the section resembles that of EET83226, and the possibility of pairing should be considered.

Data from:
  MB76
  Table 2
  Line 1614:
Origin or pseudonym:Main icefield
Mass (g):66.2
Class:C2 ung
Weathering grade:A/B
Fayalite (mol%):0-28
Ferrosilite (mol%):0-9
Comments:83226 pairing group
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' 9"S, 157° 16' 43"E)
Note: the NHM and MetBase coordinates are 11.8 km apart

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