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Northwest Africa 14012
Basic information Name: Northwest Africa 14012
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14012
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 2.39 kg
Recommended:  Lunar (bas. breccia)    [explanation]

This is 1 of 18 approved meteorites classified as Lunar (bas. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 17 Jul 2021
Writeup from MB 110:

Northwest Africa 14012 (NWA 14012)

(Northwest Africa)

Purchased: 2018 Apr

Classification: Lunar meteorite (basaltic breccia)

History: Purchased by Mohammed Sbai in April 2018 from a dealer in Tinfouchy, Algeria 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) Relatively mafic breccia composed of mineral clasts of anorthite, olivine, low-Ca pyroxene, pigeonite and augite in a fine grained matrix containing subcalcic ferroaugite, ilmenite, chromite, merrillite and baddeleyite.

Geochemistry: Olivine (Fa47.0-65.5, FeO/MnO = 87-96, N = 5), low-Ca pyroxene (Fs37.7-55.2Wo1.7-2.9, FeO/MnO = 55-64, N = 4), pigeonite (Fs28.0Wo14.4, FeO/MnO = 51), subcalcic ferroaugite (Fs75.9Wo23.1, FeO/MnO = 76), augite (Fs15.9-23.9Wo41.4-42.9, FeO/MnO = 49-61, N = 3), anorthite (An95.7-97.0Or0.1, N = 4).

Classification: Lunar (polymict basaltic breccia). Many of the mafic silicate clasts in this specimen are much more ferroan than in typical lunar feldspathic breccias, implying a significant proportion of mare components.

Specimens: 27.2 g including one polished endcut at UWB; remainder with M. al Faheem.

Data from:
  Table 0
  Line 0:
Place of purchase:Tinfouchy, Algeria
Date:P 2018 Apr
Mass (g):2394
Class:Lunar (bas. breccia)
Shock stage:low
Weathering grade:low
Fayalite (mol%):47.0-65.5
Ferrosilite (mol%):37.7-55.2; 15.9-23.9; 28.0; 75.9
Wollastonite (mol%):1.7-2.9; 41.4-42.9; 14.4; 23.1
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):27.2
Type spec location:UWB
Main mass:M. al Faheem
Comments:Work name MaF-3; 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 8495 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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