Meteoritical Bulletin: Entry for Elephant Moraine 92103

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Elephant Moraine 92103

Basic information

Name: Elephant Moraine 92103
This is an OFFICIAL meteorite name.
Abbreviation: EET 92103
Observed fall: No
Year found: 1992
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 1.5 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 17(3)	(1994)	C2
Meteoritical Bulletin:	MB 79	(1996)	C2
NHM Catalogue:	5th Edition	(2000)	C2
MetBase:	v. 7.1	(2006)	C2
Antarctic Meteorite Newsletter:	AMN 33(1)	(2010)	CM2
Recommended:			CM2 [explanation]

This is 1 of 636 approved meteorites classified as CM2. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites

Writeup

Writeup from AMN 17(3):

Sample No.: EET92103
Location: Elephant Moraine
Dimensions (cm): 1.5 x 1.2 x 0.6
Weight (g): 1.5
Meteorite Type: C2 chondrite

Macroscopic Description: Robbie Marlow
Sixty percent of the exterior of EET92103 is covered with dull black fusion crust. The fusion crust is fractured and contains small amounts of evaporite deposit. The interior material is fine-grained with numerous white inclusions that are sub-millimeter in size. Weathering is minimal.

Thin Section (,3) Description: Brian Mason
The section shows small chondrules (up to 0.5 mm across) and occasional mineral grains in a semi-translucent dark brown to black matrix. Most of the chondrules and mineral grains consist of olivine; pyroxene is rare. Microprobe analyses show that most of the olivine is close to Mg2SiO4 in composition, with a few more iron-rich grains; one pyroxene grain, Fs3, was analyzed. The matrix appears to consist largely of iron-rich serpentine. The meteorite is a C2 chondrite.

Data from:
  MB79
  Table 2
  Line 303:

Origin or pseudonym:	Northern Ice Patch
Mass (g):	1.5
Class:	C2
Weathering grade:	A/Be
Fayalite (mol%):	1-20
Ferrosilite (mol%):	3

Catalogs:

Search for specimens in the Smithsonian Institution collection (U.S.):	Require SI photo
Search for this meteorite in the NASA/JSC database (U.S.):

References:

Published in Antarctic Meteorite Newsletter 17(3) (1994), JSC, Houston
Published in Meteoritical Bulletin, no. 79, MAPS 31, A161-A174 (1996)

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Geography:

Antarctica

Coordinates:
Catalogue of Meteorites:	(76° 11'S, 157° 10'E)
Recommended::	(76° 2' 13"S, 156° 7' 47"E)

Note: the NHM and MetBase coordinates are 32.2 km apart

Statistics:
This is 1 of 44543 approved meteorites from Antarctica (plus 3802 unapproved names)

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Revision
history:

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