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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:help 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 163 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)
Writeuphelp
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

EET96286 Thumbnail

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
EET96286 - Cross-Polarized Light 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 Fa1-2 and pyroxenes from Fs1-4. 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:
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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:
CreditPhotos
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 39173 approved meteorites from Antarctica (plus 5051 unapproved names)
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