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Queen Alexandra Range 99122
Basic information Name: Queen Alexandra Range 99122
     This is an OFFICIAL meteorite name.
Abbreviation: QUE 99122
Observed fall: No
Year found: 1999
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 19.9 g
Classification
  history:
NHM Catalogue:  5th Edition  (2000)  E-ung
Antarctic Meteorite Newsletter:  AMN 24(2)  (2001)  Enstatite meteorite-ung
Meteoritical Bulletin:  MB 86  (2002)  E-ung
MetBase:  v. 7.1  (2006)  E-an
Recommended:  E-an    [explanation]

This is 1 of 5 approved meteorites classified as E-an.   [show all]
Search for other: Enstatite chondrites, Enstatite chondrites (type 4-7), and Enstatite-rich meteorites
Comments: Field number: 11613
Writeuphelp
Writeup from AMN 24(2):
Sample No.: QUE 99122; 99157; 99158
Location: Queen Alexandra Range
Field No.: 11613; 11600; 11641
Dimensions (cm): 3.0x2.0x1.5;
3.0x1.25x1.5;
4.0x2.5x2.0
Weight (g): 19.936; 10.67; 31.012
Meteorite Type: Enstatite Meteorite Ungrouped
    QUE99122 QUE99157 158

Macroscopic Description: Kathleen McBride
10% of the exterior of these meteorites are covered with patchy brown-black fusion crust. The interiors reveal rusty crystalline material that crumbles easily. These meteorites are too rusty to observe any visible inclusions.

Thin Section (,2) Descriptions: Tim McCoy and Linda Welzenbach
These meteorites are so similar that a single description suffices. The section consists of mm-sized enstatite grains (Fs0-1), SiO2, zoned plagioclase (An7-31), potassium feldspar, metal, troilite, daubreelite, alabandite and schreibersite. The latter phases often occur as rounded enclaves in the enstatite. These meteorites are paired with the QUE 99059/94204/97348/97289 grouping. Unlike these earlier members, which contained either plagioclase or SiO2, these three contain both phases. These meteorites are unusual aubrites or enstatite chondrite impact melt rocks.


  QUE 99122 - Plane-Polarized Light QUE 99122 - Cross-Polarized Light
  QUE 99122 Plane-Pol. Light QUE 99122 Cross-Pol. Light
Skip TS Images QUE99157
QUE 99157 - Plane-Polarized Light QUE 99157 - Cross-Polarized Light QUE 99157 - Cross-Polarized Light
QUE 99157 Plane-Pol. Light QUE 99157 Cross-Pol. Light QUE 99157 Cross-Pol. Light
  QUE 99158 - Plane-Polarized Light QUE 99158 - Cross-Polarized Light
  QUE 99158 Plane-Pol. Light QUE 99158 Cross-Pol. Light
Data from:
  MB86
  Table A1
  Line 88:
Origin or pseudonym:W. Tail's End Icefield
Mass (g):19.9
Class:E-ung
Weathering grade:C
Ferrosilite (mol%):0-1
Comments:94204 pairing group
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 24(2) (2001), JSC, Houston
Published in Meteoritical Bulletin, no. 86, MAPS 37, A157-A184 (2002)
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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° 33' 1"S, 162° 30' 29"E)
Note: the NHM and recommended coordinates are 86.6 km apart

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