Meteoritical Bulletin: Entry for Elephant Moraine 92003

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Elephant Moraine 92003

Basic information

Name: Elephant Moraine 92003
This is an OFFICIAL meteorite name.
Abbreviation: EET 92003
Observed fall: No
Year found: 1992
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 66.4 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 16(2)	(1993)	Eucrite
	AMN 17(1)	(1994)	Eucrite-br
Meteoritical Bulletin:	MB 76	(1994)	Eucrite-br
NHM Catalogue:	5th Edition	(2000)	Eucrite-br
MetBase:	v. 7.1	(2006)	Eucrite-mmict
Recommended:			Eucrite-br [explanation]

This is 1 of 224 approved meteorites classified as Eucrite-br. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Writeup

Writeup from AMN 16(2):

Sample No.: EET92003

Location: Elephant Moraine

Dimensions (cm): 5.8 x 3.6 x 2.4

Weight (g): 66.4

Meteorite Type: Monomict Eucrite

Macroscopic Description: Cecilia Satterwhite

Two exterior surfaces of this achondrite are covered by shiny, black fusion crust. Areas devoid of fusion crust are cream-colored and have a rough texture. Evaporate deposit is present. The interior matrix is light to medium gray. Inclusions, as large as 1 cm, are present.

Thin Section L7) Descrintion: Brian Mason

The section shows a fine-grained (average grain size 0.1 mm) aggregate of pyroxene and plagioclase with a brecciated structure, and a few coarser-grained clasts. The pyroxene is fairly uniform in composition, clustering around Wo13Fs49; plagioclase composition is An86-91. Tridymite is present in small amounts. The meteorite is a monomict eucrite.

Data from:
  MB76
  Table 2
  Line 2845:

Origin or pseudonym:	Northern Ice Patch
Mass (g):	66.4
Class:	Eu "br"
Weathering grade:	A/Be
Ferrosilite (mol%):	46-52

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 16(2) (1993), 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° 3' 16"S, 156° 15' 29"E)

Note: the NHM and MetBase coordinates are 28.3 km apart

Statistics:
This is 1 of 43857 approved meteorites from Antarctica (plus 3802 unapproved names)

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