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Queen Alexandra Range 93341
Basic information Name: Queen Alexandra Range 93341
     This is an OFFICIAL meteorite name.
Abbreviation: QUE 93341
Observed fall: No
Year found: 1993
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 7.5 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 18(1)  (1995)  Ureilite
Meteoritical Bulletin:  MB 79  (1996)  Ureilite
NHM Catalogue:  5th Edition  (2000)  Ureilite
MetBase:  v. 7.1  (2006)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 572 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Field number: 8427
Writeuphelp
Writeup from AMN 18(1):
Sample No.: QUE93336; 93341
Location: Queen Alexandra Range
Dimensions (cm): 1.8 x 0.8 x 0.7; 3.0 x 1.7 x 1.2
Weight (g): 1.9; 7.5
Meteorite Type: Ureilite

Macroscopic Description: Robbie Marlow
Both of these small specimens are identical. The small amount of fusion crust that remains is dull and dark brown. The rest of the exterior surfaces have a polished, waxy appearance. The brownish-gray interior shows abundant crystal faces.

Thin Section (QUE93336,2; 93341,2) Description: Brian Mason
The sections are so similar that the meteorites are certainly paired. They show anhedral grains of olivine and pyroxene in a black matrix. Considerable weathering is indicated by brown limonite rimming many grains. In reflected light the margins of the silicate grains are seen to contain numerous minute metal grains, probably the product of reduction from their iron content by the carbonaceous matrix. During polishing the probable presence of microscopic diamonds in the matrix was noted. Microprobe analyses show that most of the olivine and pyroxene has uniform composition; olivine, Fa23; pyroxene Wo10Fs18; but the margins of the grains show greatly reduced iron contents. The meteorite is a ureilite, and appears to be relatively unshocked.

Data from:
  MB79
  Table 2
  Line 906:
Origin or pseudonym:Foggy Bottom Moraine
Mass (g):7.5
Class:Ur
Weathering grade:B
Fayalite (mol%):23
Ferrosilite (mol%):18
Comments:93336 pairing group
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 18(1) (1995), JSC, Houston
Published in Meteoritical Bulletin, no. 79, MAPS 31, A161-A174 (1996)
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Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (84°S, 168°E)
     Recommended::   (84° 35' 57"S, 162° 11' 45"E)
Note: the NHM and MetBase coordinates are 92.8 km apart

Statistics:
     This is 1 of 40753 approved meteorites from Antarctica (plus 4494 unapproved names)
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