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Elephant Moraine 83311
Basic information Name: Elephant Moraine 83311
     This is an OFFICIAL meteorite name.
Abbreviation: EET 83311
Observed fall: No
Year found: 1983
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 15.3 g
Antarctic Meteorite Newsletter:  AMN 10(2)  (1987)  C4
AMN 17(1)  (1994)  CK5
Meteoritical Bulletin:  MB 76  (1994)  CK5
NHM Catalogue:  5th Edition  (2000)  CK5
MetBase:  v. 7.1  (2006)  CK5
Recommended:  CK5    [explanation]

This is 1 of 199 approved meteorites classified as CK5.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Writeup from AMN 10(2):

Sample No.: EET83311

Location: Elephant Moraine

Weight (g): 15.3

Field No.: 1360

Dimensions (cm): 2.5 x 2.5 x 1.5

Meteorite Type: C4 Chondrite


Macroscopic Description: Roberta Score

Frothy fusion crust covers all of EET83311. Interior is medium to dark gray in color and has a massive texture. Glassy, linear striations were exposed when the stone was cleaved.


Thin Section (,2) Description: Brian Mason

Chondritic structure is barely discernable, the section consisting largely of finely granular olivine (grains ranging up to 0.2 mm, with a few larger), with a little plagioclase and opaques, largely magnetite (pyroxene is probably present, but was not certainly identified). Microprobe analyses gave the following compositions: olivine, Fa31; plagioclase, An49. The meteorite is similar to Karoonda in texture and mineral compositions, and is tentatively identified as a C4 chondrite.

Data from:
  Table 2
  Line 1574:
Origin or pseudonym:Main icefield
Mass (g):15.3
Weathering grade:A/B
Fayalite (mol%):31
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References: Published in Antarctic Meteorite Newsletter 10(2) (1987), 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° 16' 29"S, 157° 11' 49"E)
Note: the NHM and MetBase coordinates are 10.2 km apart

     This is 1 of 43700 approved meteorites from Antarctica (plus 3802 unapproved names)
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