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Elephant Moraine 92100
Basic information Name: Elephant Moraine 92100
     This is an OFFICIAL meteorite name.
Abbreviation: EET 92100
Observed fall: No
Year found: 1992
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 3.4 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 17(3)  (1994)  L3.4
Meteoritical Bulletin:  MB 79  (1996)  L3.4
NHM Catalogue:  5th Edition  (2000)  L3.4
MetBase:  v. 7.1  (2006)  L3.4
Recommended:  L3.4    [explanation]

This is 1 of 51 approved meteorites classified as L3.4.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Writeuphelp
Writeup from AMN 17(3):
Sample No.: EET92100
Location: Elephant Moraine
Dimensions (cm): 1.5 x 1.6 x 0.8
Weight (g): 3.4
Meteorite Type: L3 chondrite (estimated L3.4)

Macroscopic Description: Robbie Marlow
EET92100 has dark brown to black frothy fusion crust covering 95% of its exterior surface. A minute amount of evaporite deposit is present on the exterior surface. The interior matrix is black and evenly textured. Oxidation is minimal.

Thin Section (,3) Description: Brian Mason
The section shows a close-packed aggregate of chondrules (up to 2.4 mm across), chondrule fragments, and mineral grains in a small amount of black matrix which contains a few metal and sulfide grains. A variety of chondrule types is present, the commonest being granular olivine and olivine-pyroxene, porphyritic olivine, and radiating pyroxene. Microprobe analyses show olivine and pyroxene of variable composition; olivine, Fa3-39, mean Fa12; pyroxene, Fs5-21. The meteorite is classified as an L3 chondrite (estimated L3.4).

Data from:
  MB79
  Table 2
  Line 300:
Origin or pseudonym:Northern Ice Patch
Mass (g):3.4
Class:L3.4
Weathering grade:A/Be
Fayalite (mol%):3-39
Ferrosilite (mol%):5-21
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° 2' 30"S, 156° 18' 1"E)
Note: the NHM and MetBase coordinates are 28.1 km apart

Statistics:
     This is 1 of 40129 approved meteorites from Antarctica (plus 4494 unapproved names)
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