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Elephant Moraine 83399
Basic information Name: Elephant Moraine 83399
     This is an OFFICIAL meteorite name.
Abbreviation: EET 83399
Observed fall: No
Year found: 1983
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 203 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 9(1)  (1986)  L3
Meteoritical Bulletin:  MB 76  (1994)  L3.3/3.6
NHM Catalogue:  5th Edition  (2000)  L3.3/3.6
MetBase:  v. 7.1  (2006)  L3.3-3.6
Antarctic Meteorite Newsletter:  AMN 33(1)  (2010)  L3.3-3.6
Recommended:  L3.3-3.6    [explanation]

This is the only approved meteorite classified as L3.3-3.6.
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Writeuphelp
Writeup from AMN 9(1):

Sample No.: EET83399

Location: Elephant Moraine

Weight (g): 203.3

Field No.: 2774

Dimensions (cm): 5 x 5 x 4

Meteorite Type: L3 Chondrite

 

Macroscopic Description: René Martinez

Small patches of black, shiny fusion crust remain on this otherwise extensively weathered meteorite.

 

Thin Section (,3) Description: Brian Mason

The section shows numerous chondrules, up to 1.8 mm across. A variety of types is present, including granular and porphyritic olivine and olivine-pyroxene, barred olivine, and cryptocrystalline pyroxene. The matrix consists largely of fine-grained silicates with minor subequal amounts of nickel-iron and troilite. The meteorite is considerably weathered, with brown limonitic staining throughout the section. Micro-probe analyses show olivine ranging in composition, Fa3-26, with a mean of Fa17 (CV FeO is 34); the pyroxene is clinobronzite ranging in composition from Fs6 to Fs25. This range in composition indicates type 3, and the amount of nickel-iron suggests L group. The meteorite is tentatively classified as an L3 chondrite.

Data from:
  MB76
  Table 2
  Line 1657:
Origin or pseudonym:Main icefield
Mass (g):203.3
Class:L3.3/3.6
Weathering grade:C
Fayalite (mol%):3-26
Ferrosilite (mol%):6-25
Comments:26Al=77±4
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 9(1) (1986), 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° 19' 5"S, 157° 15' 38"E)
Note: the NHM and MetBase coordinates are 15.2 km apart

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