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Elephant Moraine 90248
Basic information Name: Elephant Moraine 90248
     This is an OFFICIAL meteorite name.
Abbreviation: EET 90248
Observed fall: No
Year found: 1990
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 0.4 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 15(2)  (1992)  CO3
Meteoritical Bulletin:  MB 76  (1994)  CO3
NHM Catalogue:  5th Edition  (2000)  CO3
MetBase:  v. 7.1  (2006)  CO3
Recommended:  CO3    [explanation]

This is 1 of 554 approved meteorites (plus 1 unapproved name) classified as CO3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Writeuphelp
Writeup from AMN 15(2):

Sample No.: EET90248

Location: Elephant Moraine

Field Number: 7333

Dimensions (cm): 0.7 x 0.5 x 0.4

Weight (g): 0.4

Meteorite Type: C3O chondrite

 

Macroscopic Description: Carol Schwarz

Frothy fusion crust covers this small smooth pebble. The interior is medium gray and has small light gray inclusions.

 

Thin Section (,2) Description: Brian Mason

The section shows an aggregate of small chondrules (up to 0.7 mm across, but most are less than 0.3 mm) and chondrule fragments in a black opaque matrix containing minor amounts of nickel-iron and troilite. Remnants of fusion crust rim the section. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa1-26, mean Fa8 (CV FeO is 100); pyroxene, Fs1-9. The meteorite is classified as a C3 chondrite of the Ornans subtype.

 

Data from:
  MB76
  Table 2
  Line 2280:
Origin or pseudonym:Texas Bowl
Mass (g):0.4
Class:CO3
Weathering grade:A
Fayalite (mol%):1-26
Ferrosilite (mol%):1-9
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 15(2) (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° 17' 39"S, 156° 27' 33"E)
Note: the NHM and MetBase coordinates are 22.5 km apart

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