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Queen Alexandra Range 97991
Basic information Name: Queen Alexandra Range 97991
     This is an OFFICIAL meteorite name.
Abbreviation: QUE 97991
Observed fall: No
Year found: 1997
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 6.8 g
Classification
  history:
NHM Catalogue:  5th Edition  (2000)  Diogenite
Antarctic Meteorite Newsletter:  AMN 23(2)  (2000)  Diogenite
Meteoritical Bulletin:  MB 85  (2001)  Diogenite
MetBase:  v. 7.1  (2006)  Diogenite
Recommended:  Diogenite    [explanation]

This is 1 of 464 approved meteorites classified as Diogenite.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Field number: 9663
Writeuphelp
Writeup from AMN 23(2):
Sample No.: QUE 97991
Location: Queen Alexandra Range
Dimensions (cm): 2.0x1.25x1.5
Weight (g): 6.766
Meteorite Type: Diogenite
    QUE97991

Macroscopic Description: Kathleen McBride
The exterior of this achondrite has dull black fusion crust on 45% of its surface. The interior is a tan matrix with melted appearing clasts and some minor cracks. The meteorite is friable and coarse grained with rust scattered. Irregularly shaped inclusions are white and black.

Thin Section (, 3) Description: Tim McCoy
QUE 97991 - Cross-Polarized Light The section shows a groundmass of coarse (up to 1.5 mm) comminuted pyroxene, with minor plagioclase and SiO2. Orthopyroxene has a composition of Fs25Wo1-4 and plagioclase is An78-85Or0-3. The Fe/Mn ratio of the pyroxene is ~30. The meteorite is a diogenite.

Data from:
  MB85
  Table A1
  Line 562:
Origin or pseudonym:W. Foggy Bottom Moraine
Mass (g):6.8
Class:Diog
Weathering grade:B
Ferrosilite (mol%):25
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 23(2) (2000), JSC, Houston
Published in Meteoritical Bulletin, no. 85, MAPS 36, A293-A322 (2001)
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Photos:
CreditPhotos
Photographs from AMN:
Photograph from unknown source A photo is in the write-up above
Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (84°S, 168°E)
     Recommended::   (84° 36' 0"S, 162° 11' 24"E)
Note: the NHM and recommended coordinates are 92.9 km apart

Statistics:
     This is 1 of 40759 approved meteorites from Antarctica (plus 4494 unapproved names)
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