Meteoritical Bulletin: Entry for Elephant Moraine 90986

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Elephant Moraine 90986

Basic information

Name: Elephant Moraine 90986
This is an OFFICIAL meteorite name.
Abbreviation: EET 90986
Observed fall: No
Year found: 1990
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 1.2 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 543 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.: EET90986
Location: Elephant Moraine
Dimensions (cm): 1.6 x 0.9 x 0.5
Weight (g): 1.2
Meteorite Type: C2 chondrite

Macroscopic Description: Cecilia Satterwhite
Black, frothy, pitted, and fractured fusion crust covers most of EET90986. The interior is made up of fine-grained, black matrix with a few shiny inclusions. This sample is extremely friable.

Thin Section (,2) Description: Brian Mason
The section shows chondrules and chondrule fragments, up to 0.9 mm across, and small scattered mineral grains, in a black matrix. The chondrules and chondrule fragments appear to be completely serpentinized. Most of the mineral grains are calcite. The matrix consists largely of iron-rich serpentine, made opaque by carbonaceous matter. The meteorite is a C2 chondrite; it is similar to EET90047 and the possibility of pairing should be considered.

Data from:
  MB79
  Table 2
  Line 197:

Origin or pseudonym:	Texas Bowl
Mass (g):	1.2
Class:	C2
Weathering grade:	B
Comments:	90047 pairing group

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° 16' 3"S, 156° 26' 32"E)

Note: the NHM and MetBase coordinates are 21.4 km apart

Statistics:
This is 1 of 40719 approved meteorites from Antarctica (plus 4494 unapproved names)

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