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Northwest Africa 12393
Basic information Name: Northwest Africa 12393
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12393
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 1267 g
Meteoritical Bulletin:  MB 108  (2020)  Lunar (olivine gabbronorite)
Recommended:  Lunar (olivine gabbronorite)    [explanation]

This is the only approved meteorite classified as Lunar (olivine gabbronorite).
Search for other: Lunar meteorites
Comments: Approved 9 Feb 2019
Writeup from MB 108:

Northwest Africa 12393 (NWA 12393)

(Northwest Africa)

Purchased: 2016

Classification: Lunar (olivine gabbronorite)

History: Purchased from Ahmad Buraga in Morocco, February 22, 2016.

Physical characteristics: Single stone, lacking fusion crust. Saw cut reveals a breccia of dark-brown and dark-green clasts with a few, scattered, light-colored, feldspathic fragments.

Petrography: (C. Agee, UNM) This meteorite is a chemically equilibrated, fragmental breccia with olivine, augite, low-Ca pyroxene, anorthitic plagioclase, and ubiquitous minor chromite. Following lunar petrologic nomenclature this is an olivine gabbronorite.

Geochemistry: (C. Agee, UNM) Olivine Fa 27.2±2.9, n=12; augite Fs14.0±1.4Wo39.8±1.8, Fe/Mn=50±7, n=4; low-Ca pyroxene Fs22.5±1.9Wo5.9±2.1, Fe/Mn=52±3, n=8; plagioclase An96.3±0.9Ab3.5±0.9Or0.2±0.0, n=7.

Classification: Lunar (olivine gabbronorite)

Specimens: 20.4 g including a probe mount on deposit at UNM, Jay Piatek holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2016
Mass (g):1267.1
Class:Lunar (olivine gabbronorite)
Shock stage:high
Weathering grade:moderate
Fayalite (mol%):27.2±2.9
Ferrosilite (mol%):14.0±1.4; 22.5±1.9
Wollastonite (mol%):39.8±1.8; 5.9±2.1
Classifier:C. Agee, UNM
Type spec mass (g):20.4
Type spec location:UNM
Main mass:Jay Piatek
Comments:Field name JP-409; submitted by C. Agee, UNM
   and collections
UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
References: Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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     This is 1 of 8745 approved meteorites from (Northwest Africa) (plus 1880 unapproved names)

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