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Elephant Moraine 82601
Basic information Name: Elephant Moraine 82601
     This is an OFFICIAL meteorite name.
Abbreviation: EET 82601
Observed fall: No
Year found: 1982
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 149.5 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 7(2)  (1984)  L3
Meteoritical Bulletin:  MB 76  (1994)  L3.5/3.7
NHM Catalogue:  5th Edition  (2000)  L3.5/3.7
MetBase:  v. 7.1  (2006)  L3.5-3.7
Antarctic Meteorite Newsletter:  AMN 33(1)  (2010)  L3.5-3.7
Recommended:  L3.5-3.7    [explanation]

This is the only approved meteorite classified as L3.5-3.7.
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Writeuphelp
Writeup from AMN 7(2):

Sample No.: EET82601

Location: Elephant Moraine

Field No.: 2963

Weight (gms): 149.5

Meteorite Type: L3 Chondrite

 

Physical Description: Carol Schwarz

This angular to subrounded specimen is covered with patchy and remnant fusion crust. Chondrules 1-4 mm are visible on the surface. The interior is very dark with 1 mm weathered chondrules visible. Dimensions: 5.5 x 5 x 3 cm

 

Petrographic Description: Brian Mason

The section shows a close-packed aggregate of chondrules, ranging up to 1.5 mm in maximum dimension; a variety of types is present, the commonest being granular and porphyritic olivine and olivine-pyroxene, and cryptocrystalline pyroxene. The small amount of matrix is fine-grained and opaque, and contains a few grains of nickel-iron and troilite. The meteorite is considerably weathered, with brown limonitic staining throughout the section. Olivine and pyroxene have variable composition. Olivine composition ranges from Fa2 to Fa39 with a mean of Fa22 (% mean deviation of FeO is 36). Pyroxene composition ranges from Fs1 to Fs35, with a mean of Fs13 (% mean deviation of FeO is 45). The texture and variable mineral compositions are those of type 3, and the amount of metal suggests L group, hence the meteorite is tentatively classified L3.

Data from:
  MB76
  Table 2
  Line 1449:
Origin or pseudonym:Main icefield
Mass (g):149.5
Class:L3.5/3.7
Weathering grade:B/C
Fayalite (mol%):2-39
Ferrosilite (mol%):1-35
Comments:26Al=65±4
Catalogs:
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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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Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (76° 11'S, 157° 10'E)
     Recommended::   (76° 18' 6"S, 157° 15' 55"E)
Note: the NHM and MetBase coordinates are 13.5 km apart

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