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Northwest Africa 11252
Basic information Name: Northwest Africa 11252
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11252
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 22.9 g
Meteoritical Bulletin:  MB 106  (2018)  Lunar (troct. anorth.)
Recommended:  Lunar (troct. anorth.)    [explanation]

This is 1 of 9 approved meteorites classified as Lunar (troct. anorth.).   [show all]
Search for other: Lunar meteorites
Comments: Approved 9 Jun 2017
Writeup from MB 106:

Northwest Africa 11252 (NWA 11252)

(Northwest Africa)

Purchased: 2017 Jan

Classification: Lunar meteorite (troctolitic anorthosite)

History: Purchased by Khalid Boushaba in January 2017 from a dealer in Erfoud, Morocco.

Physical characteristics: A single, small beige-colored stone (22.9 g) lacking fusion crust, but with visible grains of maskelynite and some cross-cutting, dark glassy veinlets.

Petrography: (A. Irving and S. Kuehner, UWS) Very fine grained assemblage dominated by anorthite (maskelynite) with olivine, pigeonite, subcalcic augite, augite, chromite (with a range of Ti contents), ilmenite, troilite, taenite and minor glass (in veins).

Geochemistry: Olivine (Fa22.4-45.1, FeO/MnO = 98-112, N = 3), pigeonite (Fs15.0-16.9Wo13.9-10.2, FeO/MnO = 51-66, N = 3), subcalcic augite (Fs16.6Wo34.4, FeO/MnO = 52), augite (Fs10.3Wo41.7, FeO/MnO = 49), maskelynite (An96.9-98.3Or0.2, N = 2).

Classification: Lunar (feldspathic troctolitic granulitic breccia).

Specimens: 4.6 g including one polished mount at UWB; remainder with Mr. K. Boushaba.

Data from:
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2017 Jan
Mass (g):22.9
Class:Lunar (troct. anorth.)
Shock stage:high
Weathering grade:low
Fayalite (mol%):22.4-45.1
Ferrosilite (mol%):15.0-16.9; 16.6; 10.3
Wollastonite (mol%):13.9-10.2; 34.4; 41.7
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):4.6
Type spec location:UWB
Main mass:K. Boushaba
Comments:Work name KB17-1; 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)
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 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

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