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Northwest Africa 13979
Basic information Name: Northwest Africa 13979
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13979
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 1321 g
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 280 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 18 Jun 2021
Writeup from MB 110:

Northwest Africa 13979 (NWA 13979)

(Northwest Africa)

Purchased: 2013

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased by Mohammed Sbai in 2013 from a dealer in Boujdour, Morocco and subsequently acquired by Maryam al Faheem in Al Ain City, Abu Dhabi, UAE in December 2020.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Breccia composed predominantly of mineral clasts of anorthite, olivine, pigeonite, exsolved pigeonite, subcalcic augite and augite, plus sparse basaltic lithic clasts, in a fine grained matrix containing accessory ilmenite, low-Ti chromite and troilite.

Geochemistry: Olivine (Fa29.2-54.1, FeO/MnO = 91-113, N = 5), low-Ca pyroxene host (Fs26.9-43.4Wo1.5-2.9, FeO/MnO = 59-61, N = 2), pigeonite (Fs34.4Wo6.1, FeO/MnO = 58), subcalcic augite (Fs19.1Wo32.5, FeO/MnO = 44), augite (Fs14.3-20.0Wo39.9-43.6, FeO/MnO = 44-47, N = 2), plagioclase (An95.2-97.0Or0.1, N = 3).

Classification: Lunar (feldspathic breccia).

Specimens: 22.1 g including one polished endcut at UWB; remainder with M. al Faheem.

Data from:
  Table 0
  Line 0:
Place of purchase:Boujdour
Date:P 2013
Mass (g):1321
Class:Lunar (feldsp. breccia)
Shock stage:low
Weathering grade:low
Fayalite (mol%):29.2-54.1
Ferrosilite (mol%):26.9; 43.4; 34.3; 19.1; 14.3
Wollastonite (mol%):2.9; 1.5; 6.1; 32.5; 43.6
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):22.1
Type spec location:UWB
Main mass:M. al Faheem
Comments:Work name MaF-2; 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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
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     This is 1 of 8559 approved meteorites from (Northwest Africa) (plus 1896 unapproved names)

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