Meteoritical Bulletin: Entry for Queen Alexandra Range 99059

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Queen Alexandra Range 99059

Basic information

Name: Queen Alexandra Range 99059
This is an OFFICIAL meteorite name.
Abbreviation: QUE 99059
Observed fall: No
Year found: 1999
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 22.1 g

Classification
history:

NHM Catalogue:	5th Edition	(2000)	E-ung
Antarctic Meteorite Newsletter:	AMN 24(1)	(2001)	Enstatite meteorite-unusual
Meteoritical Bulletin:	MB 85	(2001)	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: 11685

Writeup

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Writeup from AMN 24(1):

Sample No.:	QUE 99059
Location:	Queen Alexandra Range
Field No.:	11685
Dimensions (cm):	3.0x2.0x2.0
Weight (g):	22.064
Meteorite Type:	Enstatite Meteorite Unusual

QUE99059

Macroscopic Description: Kathleen McBride
10% of the exterior surface of this achondrite is covered with thin brown/black patches of fusion crust. The meteorite is rusty, friable, and very fractured. The interior matrix has a rusty, sugary texture exhibiting elongated crystals, melted blebs and numerous inclusions.

Thin Section (, 4) Description: Tim McCoy and Linda Welzenbach


Reflected Light	Cross-Polarized Light	Cross-Polarized Light

The section consists of mm-sized enstatite grains (Fs_0-1), abundant SiO₂, metal, troilite, daubreelite, alabandite and schreibersite. The latter phases often occur as rounded enclaves in the enstatite. QUE 99059 is almost certainly paired with the trio QUE 94204/97348/97289, although it differs from them in having abundant SiO₂ instead of abundant feldspar. These meteorites are unusual aubrites or enstatite chondrite impact melt rocks.

Data from:
  MB85
  Table A1
  Line 615:

Origin or pseudonym:	W. Tail's End Icefield
Mass (g):	22.1
Class:	E-ung
Weathering grade:	C
Ferrosilite (mol%):	0-1
Comments:	94204 pairing group

Catalogs:

Search for specimens in the Smithsonian Institution collection (U.S.):	Require SI photo
Search for this meteorite in the NASA/JSC database (U.S.):

References:

Published in Antarctic Meteorite Newsletter 24(1) (2001), JSC, Houston
Published in Meteoritical Bulletin, no. 85, MAPS 36, A293-A322 (2001)

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Photos:

Credit	Photos
Photographs from AMN:
Photograph from unknown source	A photo is in the write-up above

Geography:

Antarctica

Antarctica

Coordinates:
Catalogue of Meteorites:	(84°S, 168°E)
Recommended::	(84° 33' 28"S, 162° 30' 25"E)

Note: the NHM and recommended coordinates are 87.2 km apart

Statistics:
This is 1 of 44543 approved meteorites from Antarctica (plus 3802 unapproved names)

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