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Elephant Moraine 90102
Basic information Name: Elephant Moraine 90102
     This is an OFFICIAL meteorite name.
Abbreviation: EET 90102
Observed fall: No
Year found: 1990
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 17 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 15(2)  (1992)  E6
AMN 17(1)  (1994)  EL6
Meteoritical Bulletin:  MB 76  (1994)  EL6
NHM Catalogue:  5th Edition  (2000)  EL6
MetBase:  v. 7.1  (2006)  EL6
Recommended:  EL6    [explanation]

This is 1 of 116 approved meteorites classified as EL6.   [show all]
Search for other: EL chondrites, Enstatite chondrites, Enstatite chondrites (type 4-7), and Enstatite-rich meteorites
Writeuphelp
Writeup from AMN 15(2):

Sample No.: EET90102

Location: Elephant Moraine

Field Number: 6932

Dimensions (cm): 3 x 2 x 1.3

Weight (g): 17.0

Meteorite Type: E6 chondrite

 

Macroscopic Description: Carol Schwarz

This smooth oblong stone is completely covered with black to iridescent fusion crust. The interior is fine-grained and dark red-brown with abundant metal. Rusty evaporites are abundant in the freshly broken surface.

 

Thin Section (,2) Description: Brian Mason

Only vague traces of chondritic structure are visible in the thin section, which shows the meteorite to consist largely of granular enstatite (grain size 0.1-0.2 mm), a considerable amount of nickel-iron (-20%), and minor amounts of sulfides and plagioclase; traces of a highly birefringent colorless mineral, probably sinoite, are present. Remnants of fusion crust rim the section. Considerable weathering is indicated by areas of brown limonite throughout the section. Microprobe analyses show the enstatite is almost pure MgSiO3 (CaO 0.7%; FeO 0.2%; Al2O3, TiO2, and MnO each < 0.1%); plagioclase is somewhat variable in composition, An11-18. The metal contains 0.8% Si. The meteorite is an E6 chondrite.

 

Data from:
  MB76
  Table 2
  Line 2134:
Origin or pseudonym:Texas Bowl
Mass (g):17
Class:EL6
Weathering grade:B/Ce
Fayalite (mol%):¾
Ferrosilite (mol%):0.3
Catalogs:
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Search for this meteorite in the NASA/JSC database (U.S.):   
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' 37"S, 156° 28' 23"E)
Note: the NHM and MetBase coordinates are 21.2 km apart

Statistics:
     This is 1 of 39173 approved meteorites from Antarctica (plus 5051 unapproved names)
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