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Northwest Africa 10953
Basic information Name: Northwest Africa 10953
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10953
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 55 g
Meteoritical Bulletin:  MB 106  (2018)  Lunar (feldsp. breccia)
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 334 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 1 Mar 2017
Writeup from MB 106:

Northwest Africa 10953 (NWA 10953)

(Northwest Africa)

Purchased: 2016 May

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased by Ben Hoefnagels in May 2016 from a dealer in Ouarzazate, Morocco.

Physical characteristics: A single, dark gray stone (55 g) lacking fusion crust. The fresh interior exhibits sparse, small whitish clasts in a very fine grained, dark gray matrix containing tiny grains of metal and sparse vesicles.

Petrography: (A. Irving and S. Kuehner, UWS) Very fine grained and relatively plagioclase-rich breccia composed of small angular mineral clasts plus some polymineralic clasts. Minerals are anorthite, pigeonite, augite, exsolved pigeonite, olivine, kamacite, ilmenite and Ti-chromite, with minor secondary calcite and barite.

Geochemistry: (P. Carpenter, WUSL) Olivine (Fa25.3-28.7, FeO/MnO = 86-94, N = 3), pigeonite (Fs37.5Wo5.4, FeO/MnO = 61; Fs41.3Wo9.9, FeO/MnO = 54; N = 2), augite (Fs12.7Wo40.4, FeO/MnO = 48), plagioclase (An95.6-97.1Or0.1, N = 2).

Classification: Lunar (feldspathic breccia).

Specimens: 11.2 g including one polished endcut at UWB; remainder with Mr. B. Hoefnagels.

Data from:
  Table 0
  Line 0:
Place of purchase:Ouarzazate
Date:P 2016 May
Mass (g):55
Class:Lunar (feldsp. breccia)
Shock stage:low
Weathering grade:low
Fayalite (mol%):25.3-28.7
Ferrosilite (mol%):37.5; 41.3; 12.7
Wollastonite (mol%):5.4; 9.9; 40.4
Classifier:A. Irving and P. Carpenter, UWS
Type spec mass (g):11.2
Type spec location:UWB
Main mass:B. Hoefnagels
Comments:BH031; submitted by A. Irving
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
References: Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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     This is 1 of 9570 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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