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Elephant Moraine 90047
Basic information Name: Elephant Moraine 90047
     This is an OFFICIAL meteorite name.
Abbreviation: EET 90047
Observed fall: No
Year found: 1990
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 1.2 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)  CM1/2
Antarctic Meteorite Newsletter:  AMN 31(1)  (2008)  CM1/2
Recommended:  CM1/2    [explanation]

This is 1 of 25 approved meteorites classified as CM1/2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 1), CM chondrites, and CM-CO clan chondrites
Writeuphelp
Writeup from AMN 15(1):

Sample No.: EET90047

Location: Elephant Moraine

Field Number: 6854

Dimensions (cm): 1.7 x 1 x 0.5

Weight (g): 1.2

Meteorite Type: C2 chondrite

 

Macroscopic Description: Cecilia Satterwhite

What little fusion crust remains on this carbonaceous chondrite is frothy and black. A few chondrules/inclusions are visible in the black interior.

 

Thin Section (,2) Description: Brian Mason

The section shows numerous chondrules, up to 0.8 mm across, and some scattered silicate grains, mainly olivine, in a black matrix. The chondrules appear to be completely serpentinized. The olivine grains in the matrix are close to Mg2SiO4 in composition, with a few more iron-rich grains; the composition range is Fa1-11, mean Fa2 (CV FeO is 172). The meteorite is a C2 chondrite.

 

Data from:
  MB76
  Table 2
  Line 2080:
Origin or pseudonym:Texas Bowl
Mass (g):1.2
Class:C2
Weathering grade:B
Fayalite (mol%):1-11
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 15(1) (1992), 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° 15' 55"S, 156° 29' 40"E)
Note: the NHM and MetBase coordinates are 20.1 km apart

Statistics:
     This is 1 of 38937 approved meteorites from Antarctica (plus 5051 unapproved names)
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