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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
Classification
  history:
Recommended:  Lunar (bas. breccia)    [explanation]

This is 1 of 19 approved meteorites classified as Lunar (bas. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 17 Jul 2021
Writeuphelp
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:
  MB110
  Table 0
  Line 0:
Place of purchase:Tinfouchy, Algeria
Date:P 2018 Apr
Mass (g):2394
Pieces:1
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
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., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8744 approved meteorites from (Northwest Africa) (plus 1879 unapproved names)

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