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Northwest Africa 13112
Basic information Name: Northwest Africa 13112
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13112
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 386 g
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 291 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 9 Feb 2020
Writeup from MB 109:

Northwest Africa 13112 (NWA 13112)

(Northwest Africa)

Purchased: 2019 Jun

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased by Luc Labenne in June 2019 from a Moroccan dealer at the Ensisheim Show, and subsequently acquired by Theatrum Mundi.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Breccia composed of angular mineral grains of anorthite, orthopyroxene, pigeonite and augite plus some glass beads set in a finer grained matrix containing ilmenite, Ti chromite, troilite, pentlandite, kamacite and taenite.

Geochemistry: Olivine (Fa37.8-49.1, FeO/MnO = 81-98, N = 5), orthopyroxene (Fs33.8-37.2Wo2.5-1.8, FeO/MnO = 52-61, N = 3), pigeonite (Fs41.5Wo6.1, FeO/MnO = 63), augite (Fs25.0Wo35.4; Fs18.4Wo40.8; Fs12.5-16.3Wo45.7-42.7; FeO/MnO = 43-54; N = 5), anorthite (An94.7-96.6Or0.1, N = 3).

Classification: Lunar (feldspathic breccia).

Specimens: 20.5 g including one polished piece at UWB; main mass with Theatrum Mundi (Via Cesalpino 20, 52100 Arezzo, Italy).

Data from:
  Table 0
  Line 0:
Place of purchase:Ensisheim
Date:P 2019 Jun
Mass (g):386
Class:Lunar (feldsp. breccia)
Shock stage:low
Weathering grade:low
Fayalite (mol%):37.8-49.1
Ferrosilite (mol%):33.8-37.2; 12.5-16.3
Wollastonite (mol%):2.5-1.8; 45.7-42.7
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):20.5
Type spec location:UWB
Main mass:Theatrum Mundi
Comments:Work name LAB 051119A; 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)
Labenne: 23, rue de Esperance, 75013 Paris, France; Website (private address; updated 29 Aug 2012)
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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