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Elephant Moraine 90043
Basic information Name: Elephant Moraine 90043
     This is an OFFICIAL meteorite name.
Abbreviation: EET 90043
Observed fall: No
Year found: 1990
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 12.5 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 15(1)  (1992)  C2
Meteoritical Bulletin:  MB 76  (1994)  C2
NHM Catalogue:  5th Edition  (2000)  C2
MetBase:  v. 7.1  (2006)  CO
Antarctic Meteorite Newsletter:  AMN 31(1)  (2008)  CM2
AMN 41(1)  (2018)  CO3-an
Recommended:  CO3-an    [explanation]

This is 1 of 2 approved meteorites classified as CO3-an.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Revised 3 Jun 2019: reclassified in AMN 41(1)
Writeuphelp
Writeup from AMN 15(1):

Sample No.: EET90043

Location: Elephant Moraine

Field Number: 7133

Dimensions (cm): 2.9 x 1.8 x 1.3

Weight (g): 12.5

Meteorite Type: C2 chondrite

 

Macroscopic Descriotion: Cecilia Satterwhite

One patch of fusion crust remains on this meteorite. The interior is black with abundant chondrules/inclusions present.

 

Thin Section (,2) Descriation: Brian Mason

The section shows numerous small chondrules, up to 0.9 mm across, and abundant small grains, mainly olivine, in a black matrix. Microprobe analyses show olivine with a wide range in composition, Fa1-49, mean Fa14 (CV FeO is 103); pyroxene, Fs1-9. The meteorite is a C2 chondrite.

 


Writeup from AMN 41(1):
EET 90043: reclassification

Listed by Choe et al. (2010) as CO3-anomalous, magnetite-bearing.
Bibliography:
  • Choe W. H., Huber H., Rubin A.E., Kallemeyn G. W., and Wasson J. T. (2010) Compositions and taxonomy of 15 unusual carbonaceous chondrites. Meteorit. Planet. Sci. 45, 531-554 (link)
Data from:
  MB76
  Table 2
  Line 2076:
Origin or pseudonym:Texas Bowl
Mass (g):12.5
Class:C2
Weathering grade:B
Fayalite (mol%):1-49
Ferrosilite (mol%):1-9
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 15(1) (1992), JSC, Houston
Published in Antarctic Meteorite Newsletter 41(1) (2018), 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° 16' 6"S, 156° 25' 38"E)
Note: the NHM and MetBase coordinates are 21.8 km apart

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