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Northwest Africa 13354
Basic information Name: Northwest Africa 13354
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13354
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 240 g
Recommended:  Lodranite    [explanation]

This is 1 of 91 approved meteorites classified as Lodranite.   [show all]
Search for other: Acapulcoite-lodranite family, Lodranites, and Primitive achondrites
Comments: Approved 7 Jul 2020
Writeup from MB 109:

Northwest Africa 13354 (NWA 13354)

(Northwest Africa)

Purchased: 2020 Jan

Classification: Primitive achondrite (Lodranite)

History: Purchased by Mark Lyon in January 2020 from a Moroccan dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Protogranular texture with a mean grainsize of ~400 ┬Ám. Composed mainly of relatively magnesian orthopyroxene, forsteritic olivine and diopside together with accessory stained kamacite, oligoclase, chromite, troilite and chlorapatite.

Geochemistry: Orthopyroxene (Fs10.5-10.7Wo2.9-3.2, FeO/MnO = 14-17, N = 5), olivine (Fa6.6-8.0, FeO/MnO = 12-13, N = 5), diopside (Fs5.1-5.4Wo40.8-42.0, FeO/MnO = 8-9, N = 5), plagioclase (An20.9Or1.4). Magnetic susceptibility log χ (× 10-9 m3/kg) = 5.55.

Classification: Lodranite. This specimen is best regarded as a medium-grainsize member of the acapulcoite-lodranite clan.

Specimens: 25.2 g including one polished thin section at UWB; remainder with Mr. M. Lyon.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2020 Jan
Mass (g):240
Shock stage:low
Weathering grade:low
Fayalite (mol%):6.6-8.0
Ferrosilite (mol%):10.5-10.7; 5.1-5.4
Wollastonite (mol%):2.9-3.2; 40.8-42.0
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):25.2
Type spec location:UWB
Main mass:M. Lyon
Comments:Work name Lyon20-4; 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 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

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