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Elephant Moraine 90083
Basic information Name: Elephant Moraine 90083
     This is an OFFICIAL meteorite name.
Abbreviation: EET 90083
Observed fall: No
Year found: 1990
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 3.6 g
Antarctic Meteorite Newsletter:  AMN 15(2)  (1992)  L3
Meteoritical Bulletin:  MB 76  (1994)  L3.5
NHM Catalogue:  5th Edition  (2000)  L3.5
MetBase:  v. 7.1  (2006)  L3.5
Recommended:  L3.5    [explanation]

This is 1 of 95 approved meteorites classified as L3.5.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Writeup from AMN 15(2):

Sample No.: EET90083

Location: Elephant Moraine

Field Number: 6568

Dimensions (cm): 1.6 x 1.5 x 1.0

Weight (g): 3.6

Meteorite Type: L3 chondrite


Macroscopic Description: Cecilia Satterwhite

Most of the fusion crust present is shiny, pitted, and black. A small percentage of the fusion crust is frothy. The interior of EET90083 is gray. A profusion of chondrules/inclusions are present; some have well-defined edges. A minor amount of metal was noted.


Thin Section (,2) Description: Brian Mason

The section shows a close-packed aggregate of chondrules and chondrule fragments, up to 2.4 mm across, in a granular matrix of olivine and pyroxene with a little nickel-iron and troilite. Remnants of fusion crust rim the section. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa 2-30 , mean Fa20 (CV FeO is 43); pyroxene, Fs3-21. The variability of olivine and pyroxene compositions indicates type 3, and the small amount of nickel-iron L group, hence the meteorite is classified as an L3 chondrite (estimated L3.5).


Data from:
  Table 2
  Line 2115:
Origin or pseudonym:Texas Bowl
Mass (g):3.6
Weathering grade:B
Fayalite (mol%):2-30
Ferrosilite (mol%):3-21
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References: Published in Antarctic Meteorite Newsletter 15(2) (1992), 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° 17' 19"S, 156° 25' 59"E)
Note: the NHM and MetBase coordinates are 22.8 km apart

     This is 1 of 43699 approved meteorites from Antarctica (plus 3802 unapproved names)
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