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Elephant Moraine 92105
Basic information Name: Elephant Moraine 92105
     This is an OFFICIAL meteorite name.
Abbreviation: EET 92105
Observed fall: No
Year found: 1992
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 18.2 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 17(3)  (1994)  CR2
Meteoritical Bulletin:  MB 79  (1996)  CR2
NHM Catalogue:  5th Edition  (2000)  CR2
MetBase:  v. 7.1  (2006)  CR2
Recommended:  CR2    [explanation]

This is 1 of 161 approved meteorites classified as CR2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), and CR chondrites
Writeuphelp
Writeup from AMN 17(3):
Sample No.: EET92105
Location: Elephant Moraine
Dimensions (cm): 3.4 x 2.4 x 1.5
Weight (g): 18.2
Meteorite Type: CR2 chondrite

Macroscopic Description: Robbie Marlow
This meteorite has dull dark brown fusion crust covering 98% of its exterior. The interior matrix is black and fine-grained. Numerous white and orange inclusions that range in size from sub-millimeter to approximately 3 mm were noted.

Thin Section (,3) Description: Brian Mason
The section shows a close-packed aggregate of chondrules and chondrule fragments, up to 2.9 mm across, in a black matrix which contains 10-20% nickel-iron as globules and rimming chondrules. Fine-grained disseminated troilite is present in small amounts. Some weathering is indicated by limonitic staining in some chondrules. Most chondrules consist of granular or porphyritic olivine or olivine-pyroxene; some have intergranular pale gray glass. Most of the mineral grains are close to Mg2SiO4 and MgSiO3 in composition; olivine, Fa1-3; pyroxene, Fs1-3. The meteorite is a C2 chondrite of the Renazzo subgroup; it is confidently paired with the EET87711 group.

Data from:
  MB79
  Table 2
  Line 305:
Origin or pseudonym:Northern Ice Patch
Mass (g):18.2
Class:CR2
Weathering grade:B
Fayalite (mol%):1-3
Ferrosilite (mol%):1-3
Comments:87711 pairing group
Catalogs:
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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° 3' 59"S, 156° 0' 49"E)
Note: the NHM and MetBase coordinates are 33.5 km apart

Statistics:
     This is 1 of 38937 approved meteorites from Antarctica (plus 5051 unapproved names)
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