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Elephant Moraine 90542
Basic information Name: Elephant Moraine 90542
     This is an OFFICIAL meteorite name.
Abbreviation: EET 90542
Observed fall: No
Year found: 1990
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 5 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 15(2)  (1992)  L3
Meteoritical Bulletin:  MB 76  (1994)  L3.8
NHM Catalogue:  5th Edition  (2000)  L3.8
MetBase:  v. 7.1  (2006)  L3.8
Recommended:  L3.8    [explanation]

This is 1 of 68 approved meteorites classified as L3.8.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Writeuphelp
Writeup from AMN 15(2):

Sample No.: EET90542

Location: Elephant Moraine

Field Number: 6454

Dimensions (cm): 1.6 x 1.6 x 1

Weight (g): 5.0

Meteorite Type: L3 chondrite

 

Macroscopic Description: Cecilia Satterwhite,

Black, frothy fusion crust covers 50% of this stone. Light and dark inclusions/chondrules are visible in the heavily oxidized dark gray matrix.

 

Thin Section (,2) Description Brian Mason

The section shows numerous chondrules and chondrule fragments, up to 1.5 mm across, in a granular matrix consisting largely of olivine and pyroxene with a little nickel-iron and troilite. Minor weathering is indicated by limonitic staining around metal grains. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa9-26 , mean Fa22 (CV FeO is 19); pyroxene, Fs8-18. 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 L3.8).

 

Data from:
  MB76
  Table 2
  Line 2573:
Origin or pseudonym:Texas Bowl
Mass (g):5
Class:L3.8
Weathering grade:B
Fayalite (mol%):9-26
Ferrosilite (mol%):8-18
Catalogs:
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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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Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (76° 11'S, 157° 10'E)
     Recommended::   (76° 17' 7"S, 156° 26' 16"E)
Note: the NHM and MetBase coordinates are 22.5 km apart

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