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Elephant Moraine 83226
Basic information Name: Elephant Moraine 83226
     This is an OFFICIAL meteorite name.
Abbreviation: EET 83226
Observed fall: No
Year found: 1983
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 33.1 g
Antarctic Meteorite Newsletter:  AMN 8(1)  (1985)  C2
AMN 17(1)  (1994)  C2-ung
Meteoritical Bulletin:  MB 76  (1994)  C2-ung
NHM Catalogue:  5th Edition  (2000)  CM2
MetBase:  v. 7.1  (2006)  C2-ung
Recommended:  C2-ung    [explanation]

This is 1 of 25 approved meteorites classified as C2-ung.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), and Ungrouped chondrites
Writeup from AMN 8(1):

Sample No.: EET83226

Location: Elephant Moraine

Weight (g): 33.1

Field No.: 1332

Dimensions (cm): 4 x 2.5 x 3

Meteorite Type: C2 Chondrite


Macroscopic Description: Roberta Score

No fusion crust remains on this angular carbonaceous chondrite. The exterior has a granular texture with chondrules and inclusions abundant. Interior surfaces are blackish-brown in color whereas the exterior surfaces are black.


Thin Section (,5) Description: Brian Mason

The section shows abundant small chondrules, averaging about 0.3 mm in diameter, and numerous enclaves and mineral grains set in a moderate amount of dark brown to black opaque matrix. Chondrule types include granular and barred olivine and pale brown partly devitrified glass. Accessory amounts of finely dispersed nickel-iron and sulfide are present. Microprobe analyses show that much of the olivine is of forsteritic composition, but occasional iron-rich grains are present (Fa0.5 - Fa69, mean Fa12). Pyroxene grains are rare; composition range is Fs0.6 - Fs10. The meteorite is classed as a C2 chondrite.

Data from:
  Table 2
  Line 1491:
Origin or pseudonym:Main icefield
Mass (g):33.1
Class:C2 ung
Weathering grade:A/B
Fayalite (mol%):0.5-69
Ferrosilite (mol%):0.6-10
Comments:83226 pairing group
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References: Published in Antarctic Meteorite Newsletter 8(1) (1985), 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' 58"S, 157° 13' 45"E)
Note: the NHM and MetBase coordinates are 11.2 km apart

     This is 1 of 43698 approved meteorites from Antarctica (plus 3802 unapproved names)
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