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Elephant Moraine 90098
Basic information Name: Elephant Moraine 90098
     This is an OFFICIAL meteorite name.
Abbreviation: EET 90098
Observed fall: No
Year found: 1990
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 4.7 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 15(2)  (1992)  L3
Meteoritical Bulletin:  MB 76  (1994)  L3.7
NHM Catalogue:  5th Edition  (2000)  L3.7
MetBase:  v. 7.1  (2006)  L3.7
Recommended:  L3.7    [explanation]

This is 1 of 51 approved meteorites classified as L3.7.   [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.: EET90098

Location: Elephant Moraine

Field Number: 6994

Dimensions (cm): 1.5 x 1.7 x 1.2

Weight (g): 4.7

Meteorite Type: L3 chondrite

 

Macroscopic Description: Cecilia Satterwhite

Three-quarters of the exterior of this unequilibrated chondrite is covered with weathered fusion crust. Abundant chondrules are visible in the weathered brown matrix. Some metal was noted.

 

Thin Section (,2) Description: Brian Mason

The section shows numerous chondrules and chondrule fragments, up to 1.9 mm across, in a granular matrix of olivine and pyroxene with a little nickel-iron and troilite. Considerable weathering is indicated by brown limonitic staining throughout the section. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa5-27 , mean Fa21 (CV FeO is 28); pyroxene, Fs4-19. 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 L3.7).

 

Data from:
  MB76
  Table 2
  Line 2130:
Origin or pseudonym:Texas Bowl
Mass (g):4.7
Class:L3.7
Weathering grade:B
Fayalite (mol%):5-27
Ferrosilite (mol%):4-19
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° 16' 15"S, 156° 26' 51"E)
Note: the NHM and MetBase coordinates are 21.5 km apart

Statistics:
     This is 1 of 40744 approved meteorites from Antarctica (plus 4494 unapproved names)
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