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Northwest Africa 13346
Basic information Name: Northwest Africa 13346
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13346
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 48.7 g
Meteoritical Bulletin:  MB 109  (2020)  Lunar (feldsp. breccia)
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 336 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 7 Jul 2020
Writeup from MB 109:

Northwest Africa 13346 (NWA 13346)

(Northwest Africa)

Purchased: 2020 May

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased in May 2020 by Craig Zlimen from Mark Lyon, who in turn had bought the stone from a Moroccan dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Breccia composed of mineral clasts of anorthite, olivine, orthopyroxene, pigeonite and subcalcic augite, plus some basalt and gabbroic anorthositic lithic clasts and glass spherules, set in a finer grained matrix containing kamacite, taenite, fayalite, troilite and ilmenite. One feldspathic clast contains accessory Cr-pleonaste rimmed by Ti-chromite.

Geochemistry: Olivine (Fa22.2-45.3, FeO/MnO = 86-104, N = 5), low-Ca pyroxene (Fs29.2Wo3.9, FeO/MnO = 66), pigeonite (Fs32.6-60.8Wo17.2-23.0, FeO/MnO = 53-77, N = 4), subcalcic augite (Fs55.3Wo33.0, FeO/MnO = 65), anorthite (An95.5-96.3Or0.5-0.6, N = 2), fayalite (Fa92.3, FeO/MnO = 76), kamacite (Ni = 5.5 wt.%), taenite (Ni = 13.6 wt.%).

Classification: Lunar (feldspathic regolith breccia).

Specimens: 10.0 g in the form of a polished endcut at UWB; remainder with Mr. C. Zlimen.

Data from:
  Table 0
  Line 0:
Place of purchase:Mesa, Arizona
Date:P 2020 May
Mass (g):48.7
Class:Lunar (feldsp. breccia)
Shock stage:low
Weathering grade:low
Fayalite (mol%):22.2-45.3; 92.3
Ferrosilite (mol%):29.2; 32.6-60.8; 55.3
Wollastonite (mol%):3.9; 17.2-23.0; 33.0
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):10.0
Type spec location:UWB
Main mass:C. Zlimen
Comments:Work name ZLI26; 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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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     This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

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