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Northwest Africa 11193
Basic information Name: Northwest Africa 11193
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11193
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 155 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  Lunar (feldsp. breccia)
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 201 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 10 Apr 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11193 (NWA 11193)

(Northwest Africa)

Purchased: 2016 Jun

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased by Ben Hoefnagels in June 2016 from a dealer in Taliouine, Morocco.

Physical characteristics: A single stone (155 g) composed of angular white and light-gray clasts in a fine-grained gray matrix containing visible small grains of metal.

Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed of angular mineral grains of anorthite, olivine, orthopyroxene, zoned pigeonite, subcalcic augite, ferropigeonite, chromite, Ti-chromite, ilmenite and fayalite in a finer grained matrix containing kamacite, troilite, baddeleyite, Zr-Ca-Cr-bearing titanate and calcite.

Geochemistry: Olivine (Fa26.7-47.5, FeO/MnO = 94-98, N = 3), orthopyroxene (Fs21.5Wo4.5, FeO/MnO = 84), pigeonite (core Fs35.7Wo11.4; rim Fs47.2Wo13.4; FeO/MnO = 61-70), ferropigeonite (Fs69.6-69.9Wo21.6-24.6, FeO/MnO = 71-77, N = 2), subcalcic augite (Fs15.4Wo33.4, FeO/MnO = 65), plagioclase (An95.3-97.1Or0.6-0.2, N = 2). Bulk composition (R. Korotev, WUSL): INAA of subsamples gave the following mean abundances (in wt.%) FeO 7.7, Na2O 0.44; (in ppm) Sc 17.1, Ni 340, La 6.2, Sm 2.47, Eu 0.77, Yb 1.97, Lu 0.28, Hf 2.0, Th 1.4.

Classification: Lunar (feldspathic breccia).

Specimens: 20.3 g including a polished endcut at UWB; remainder with Mr. B. Hoefnagels.

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Taliouine
Date:P 2016 Jun
Mass (g):155
Pieces:1
Class:Lunar (feldsp. breccia)
Shock stage:low
Weathering grade:low
Fayalite (mol%):26.9-47.5
Ferrosilite (mol%):21.5; 15.4; 69.6-69.9
Wollastonite (mol%):4.5; 33.4; 21.6-24.6
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.3
Type spec location:UWB
Main mass:B. Hoefnagels
Comments:BH008; submitted by A. Irving
Institutions
   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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Catalogs:
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.
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7385 approved meteorites from (Northwest Africa) (plus 1955 unapproved names)

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