Meteoritical Bulletin: Entry for Queen Alexandra Range 99058

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Queen Alexandra Range 99058

Basic information

Name: Queen Alexandra Range 99058
This is an OFFICIAL meteorite name.
Abbreviation: QUE 99058
Observed fall: No
Year found: 1999
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 48 g

Classification
history:

NHM Catalogue:	5th Edition	(2000)	Howardite
Antarctic Meteorite Newsletter:	AMN 24(1)	(2001)	Howardite
Meteoritical Bulletin:	MB 85	(2001)	Howardite
MetBase:	v. 7.1	(2006)	Howardite
Recommended:			Howardite [explanation]

This is 1 of 451 approved meteorites classified as Howardite. [show all]
Search for other: Achondrites, HED achondrites, and Howardites

Comments:

Field number: 11658

Writeup

help

Writeup from AMN 24(1):

Sample No.:	QUE 99033; 99058
Location:	Queen Alexandra Range
Field No.:	11643; 11658
Dimensions (cm):	6.5x5.0x3.5; 5.0x2.5x2.5
Weight (g):	164.177; 48.000
Meteorite Type:	Howardite

QUE99033

QUE99058

Macroscopic Description: Kathleen McBride
The exterior of these two meteorites have a thin, patchy, brown/black fusion crust. The exposed interiors are gray in color with a few visible clasts. The interior matrix is gray in color with numerous angular to sub-angular multicolored clasts.

Thin Section (, 2;, 4) Description: Tim McCoy and Linda Welzenbach


QUE 99033 Cross-Pol. Light	QUE 99058 Plane-Pol. Light	QUE 99058 Cross-Pol. Light

These meteorites are so similar that a single description suffices. The sections show a groundmass of comminuted pyroxene and plagioclase (up to 2.5 mm) with fine- to coarse-grained basaltic and pyroxenitic clasts ranging up to 2 mm. Both contain clasts similar in texture to the unusual eucrite ALHA81001. Pyroxenes include orthopyroxene (Fs_17-31Wo_0-4) and finely-exsolved pyroxenes that include augite (Fs₂₈Wo₃₇) and orthopyroxene. The Fe/Mn ratio of pyroxene is ~30. Plagioclase is An_70-95Or_0-2. The meteorites are howardites.

Data from:
  MB85
  Table A1
  Line 614:

Origin or pseudonym:	W. Tail's End Icefield
Mass (g):	48
Class:	How
Weathering grade:	A/B
Ferrosilite (mol%):	17-31
Comments:	99033 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' 3"S, 162° 30' 40"E)

Note: the NHM and recommended coordinates are 86.7 km apart

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

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