Meteoritical Bulletin: Entry for Elephant Moraine 96286

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Elephant Moraine 96286

Basic information

Name: Elephant Moraine 96286
This is an OFFICIAL meteorite name.
Abbreviation: EET 96286
Observed fall: No
Year found: 1996
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 12.9 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 21(2)	(1998)	CV3
Meteoritical Bulletin:	MB 83	(1999)	CV3
NHM Catalogue:	5th Edition	(2000)	CV3
MetBase:	v. 7.1	(2006)	CV3
Antarctic Meteorite Newsletter:	AMN 33(1)	(2010)	CR2
Recommended:			CR2 [explanation]

This is 1 of 185 approved meteorites classified as CR2. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), and CR chondrites

Comments:

Revised 12 Feb 2010: reclassified in AMN 33(1)

Writeup

Writeup from AMN 21(2):

Sample No.:	EET96286
Location:	Elephant Moraine
Dimensions (cm):	3.0x2.0x1.5
Weight (g):	12.88
Meteorite Type:	CV3 Chondrite

Macroscopic Description: Carol Schwarz
The exterior of this carbonaceous chondrite has 95% brown/black polished fusion crust. The interior has a black matrix with mm sized white and rusty inclusions. The meteorite is very fractured.

Thin Section (,2) Description: Tim McCoy
The section exhibits large chondrules (up to 3.5 mm), CAIs and metal in a dark matrix. Some clasts appear to have been aqueously altered. Olivines range from Fa_1-2 and pyroxenes from Fs_1-4. The meteorite is an unequilibrated carbonaceous chondrite, probably a CV3.

Writeup from AMN 33(1):

EET 96286 original classification in AMN 21, no. 2 as a CV3 chondrite, but several studies have brought information to light that is inconsistent with that classification. Raman data, as well as isotopic data for C, H, and O indicate this meteorite is not a CV3, but a CR2 chondrite [1, 2].

[1] Busemann, H. et al., (2007) Characterization of insoluble organic matter in primitive meteorites by microRaman spectroscopy. Meteoritics & Planetary Science 42, 1387–1416.
[2] Makide, K. et al., (2009) Oxygen- and magnesium-isotope compositions of calcium–aluminum-rich inclusions from CR2 carbonaceous chondrites. Geochimica et Cosmochimica Acta 73, 5018–5050.

Data from:
  MB83
  Table A1
  Line 214:

Origin or pseudonym:	Meteorite City
Mass (g):	12.9
Class:	CV3
Weathering grade:	B/C
Fayalite (mol%):	1-2
Ferrosilite (mol%):	1-4

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 21(2) (1998), JSC, Houston
Published in Antarctic Meteorite Newsletter 33(1) (2010), JSC, Houston
Published in Meteoritical Bulletin, no. 83, MAPS 34, A169-A186 (1999)

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Photos:

Credit	Photos
Photographs from AMN:
Photograph from unknown source	A photo is in the write-up above
Photos from the Encyclopedia of Meteorites:
Dr Carlton Allen, JSC-KT, NASA

Geography:

Antarctica

Coordinates:
Catalogue of Meteorites:	(76° 11'S, 157° 10'E)
Recommended::	(76° 11'S, 157° 10'E)

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

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Revision
history:

This lists important revisions made to data for this record.

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