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Queen Alexandra Range 99473
Basic information Name: Queen Alexandra Range 99473
     This is an OFFICIAL meteorite name.
Abbreviation: QUE 99473
Observed fall: No
Year found: 1999
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 0.27 g
Classification
  history:
NHM Catalogue:  5th Edition  (2000)  EH
Antarctic Meteorite Newsletter:  AMN 25(2)  (2002)  EH
Meteoritical Bulletin:  MB 87  (2003)  EH
MetBase:  v. 7.1  (2006)  EH-imp melt
Antarctic Meteorite Newsletter:  AMN 31(1)  (2008)  EH-imp melt
Recommended:  EH-imp melt    [explanation]

This is 1 of 6 approved meteorites classified as EH-imp melt.   [show all]
Search for other: EH chondrites, Enstatite chondrites, Enstatite chondrites (type 4-7), Enstatite-rich meteorites, and Melted chondrites
Comments: Field number: 12707
Revised 28 Oct 2019: Corrected mass, per JSC
Writeuphelp
Writeup from AMN 25(2):
Sample No.: QUE 99473
Location: Queen Alexandra Range
Field No.: 12707
Dimensions (cm):   0.6x0.6x0.4
Weight (g): 0.274
Meteorite Type: EH Chondrite
   

Macroscopic Description: Cecilia Satterwhite
98% of the exterior of this meteorite has black fusion crust with oxidation haloes. The interior consists of a brown/black matrix with some metal.

Thin Section (, 2) Description: Linda Welzenbach, Tim McCoy and Gretchen Benedix

QUE 99473 - Plane-Polarized Light QUE 99473 - Cross-Polarized Light
Plane-Polarized Light Cross-Polarized Light
The section shows an aggregate of chondrules (up to 1 mm), chondrule fragments, and pyroxene grains in a matrix of about 30% metal and sulfide. Olivine is absent. The matrix has an igneous texture typical of impact-melted enstatite chondrites such as Abee. Weathering is modest, with staining of some enstatite grains and minor alteration of metal and sulfides. Microprobe analyses show pyroxene is Fs1-2. The meteorite appears to be an EH impact melt breccia.
Data from:
  MB87
  Table A1
  Line 179:
Origin or pseudonym:Goodwin Nunataks Icefields
Mass (g):0.27
Class:EH
Weathering grade:B/C
Ferrosilite (mol%):1-2
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 25(2) (2002), JSC, Houston
Published in Meteoritical Bulletin, no. 87, MAPS 38, A189-A248 (2003)
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Photos:
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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° 37' 1"S, 161° 27' 4"E)
Note: the NHM and recommended coordinates are 99.9 km apart

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