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Elephant Moraine 82613
Basic information Name: Elephant Moraine 82613
     This is an OFFICIAL meteorite name.
Abbreviation: EET 82613
Observed fall: No
Year found: 1982
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 4.2 g
Antarctic Meteorite Newsletter:  AMN 7(2)  (1984)  L4
Meteoritical Bulletin:  MB 76  (1994)  L4
NHM Catalogue:  5th Edition  (2000)  L4
MetBase:  v. 7.1  (2006)  L4
Recommended:  L4    [explanation]

This is 1 of 1715 approved meteorites (plus 4 unapproved names) classified as L4.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Writeup from AMN 7(2):

Sample No.: EET82613

Location: Elephant Moraine

Field No.: 2977

Weight (gms): 4.2

Meteorite Type: L4 Chondrite

Physical Description: Carol Schwarz,

This angular fragment is shaped like the corner of a larger piece. The interior is yellowish with some less weathered gray matrix visible. The fusion crust is black and dull and approximately 1 mm thick. Dimensions: 1.5 x 1.5 x 1.5 cm


Petrographic Description: Brian Mason

Chondrules are abundant and well-developed, ranging up to 1.5 mm in diameter; a variety of types are present, the commonest being granular and porphyritic olivine and olivine-pyroxene (much of the pyroxene is polysynthetically twinned clinobronzite). The chondrules are set in a ground-mass consisting largely of fine-grained olivine and pyroxene, with minor amounts of coarser-grained nickel-iron and troilite. A moderate degree of weathering is indicated by brown limonitic staining concentrated around metal grains. Microprobe analyses give the following compositions: olivine, Fa24; pyroxene, Fs20. The meteorite is an L4 chondrite.

Data from:
  Table 2
  Line 1461:
Origin or pseudonym:Main icefield
Mass (g):4.2
Weathering grade:B
Fayalite (mol%):24
Ferrosilite (mol%):20
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References: Published in Antarctic Meteorite Newsletter 7(2) (1984), JSC, Houston
Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
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     Catalogue of Meteorites:   (76° 11'S, 157° 10'E)
     Recommended::   (76° 19' 0"S, 157° 16' 10"E)
Note: the NHM and MetBase coordinates are 15.1 km apart

     This is 1 of 40744 approved meteorites from Antarctica (plus 4494 unapproved names)
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