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Elephant Moraine 90080
Basic information Name: Elephant Moraine 90080
     This is an OFFICIAL meteorite name.
Abbreviation: EET 90080
Observed fall: No
Year found: 1990
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 4.1 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 15(2)  (1992)  L3
Meteoritical Bulletin:  MB 76  (1994)  L3.4
NHM Catalogue:  5th Edition  (2000)  L3.4
MetBase:  v. 7.1  (2006)  L3.4
Recommended:  L3.4    [explanation]

This is 1 of 51 approved meteorites classified as L3.4.   [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.: EET90080; 90161; 90261

Location: Elephant Moraine

Field Number: 7336; 6675; 7313

Dimensions (cm): 1.5 x 1.5 x 0.8; 2 x 1.7 x 0.9; 2 x 1.7 x 0.6

Weight (g): 4.1; 9.7; 6.6

Meteorite Type: L3 chondrite

 

Macroscopic Description: Cecilia Satterwhite

Black, pitted, and fractured fusion crust covers most of EET90080 and 90261 and half of 90161. The interiors of all three stones are black with abundant light and dark colored chondrules/inclusions. Many of the chondrules have well-defined edges. Evaporite deposit is present on 90261.

 

Thin Section (EET90080.2) Description; Brian Mason

EET90161,2 and 90261,2 are similar in all respects, and are probably paired with EET90080. The section of EET90080 shows a close-packed aggregate of chondrules and chondrule fragments, up to 1.5 mm across, in a dark matrix which contains a little nickel-iron and troilite. Minor weathering is indicated by a limited amount of brown limonitic staining throughout the section. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa 1-22, mean Fa12 (CV FeO is 60); pyroxene, Fs1-27. 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 L3.4).

 

Data from:
  MB76
  Table 2
  Line 2112:
Origin or pseudonym:Texas Bowl
Mass (g):4.1
Class:L3.4
Weathering grade:B
Fayalite (mol%):1-22
Ferrosilite (mol%):1-27
Comments:90080 pairing group
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' 12"S, 156° 32' 30"E)
Note: the NHM and MetBase coordinates are 19.2 km apart

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