Meteoritical Bulletin: Entry for Elephant Moraine 90248

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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: 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 645 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

Writeup

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:

Search for specimens in the Smithsonian Institution collection (U.S.):	Require SI photo
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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 44547 approved meteorites from Antarctica (plus 3802 unapproved names)

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Revision
history:

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