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Queen Alexandra Range 93523
Basic information Name: Queen Alexandra Range 93523
     This is an OFFICIAL meteorite name.
Abbreviation: QUE 93523
Observed fall: No
Year found: 1993
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 0.44 g
Antarctic Meteorite Newsletter:  AMN 18(2)  (1995)  E4
Meteoritical Bulletin:  MB 79  (1996)  E4
NHM Catalogue:  5th Edition  (2000)  E4
MetBase:  v. 7.1  (2006)  E4
Recommended:  E4    [explanation]

This is 1 of 6 approved meteorites classified as E4.   [show all]
Search for other: Enstatite chondrites, Enstatite chondrites (type 4-7), and Enstatite-rich meteorites
Comments: Field number: 8151
Revised 28 Oct 2019: Corrected mass, per JSC
Writeup from AMN 18(2):
Sample No.:
Location:Queen Alexandra Range
Dimensions (cm):0.8 x 0.6 x 0.3
Weight (g):0.4
Meteorite Type:E4 ChondriteMacroscopic Description: Carol Schwarz
Frothy fusion crust is present on this small chondrite. The overall appearance of QUE93523 is a polished, reddish brown fragment. The entire sample is now embedded in epoxy.

Thin Section (,1) Description: Brian Mason
The section shows an aggregate of chondrules and chondrule fragments, up to 1.2 mm across, and mineral grains in a moderate amount of black matrix. The chondrules and mineral grains consist almost entirely of pyroxene, with accessory olivine in a few chondrules. Polysynthetic twinning is present in some of the pyroxene. The matrix contains a moderate amount of nickel-iron and sulfides. Weathering is extensive, with veinlets and patches of brown limonite throughout the section. Microprobe analyses show that the pyroxene is close to MgSiO3 in composition (FeO 0.4-1.9%, CaO 0.1-0.6%). The nickel-iron contains 2.8% Si. The meteorite is classified as an E4 chondrite. It is very similar to QUE93513, with which it is probably paired.

Data from:
  Table 2
  Line 1088:
Origin or pseudonym:Foggy Bottom Moraine
Mass (g):0.4
Weathering grade:B/C
Ferrosilite (mol%):0.4-1.9
Comments:93513 pairing group
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References: Published in Antarctic Meteorite Newsletter 18(2) (1995), JSC, Houston
Published in Meteoritical Bulletin, no. 79, MAPS 31, A161-A174 (1996)
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     Catalogue of Meteorites:   (84°S, 168°E)
     Recommended::   (84° 36' 23"S, 162° 6' 43"E)
Note: the NHM and recommended coordinates are 94 km apart

     This is 1 of 43856 approved meteorites from Antarctica (plus 3802 unapproved names)
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