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Northwest Africa 11809
Basic information Name: Northwest Africa 11809
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11809
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 67 g
Meteoritical Bulletin:  MB 107  (2018)  Lunar (feldsp. breccia)
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 341 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 28 May 2018
Writeup from MB 107:

Northwest Africa 11809 (NWA 11809)

(Northwest Africa)

Purchased: 2017 Sep

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased by Fabien Kuntz in September 2017 from a dealer in Erfoud, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed of angular mineral clasts of anorthite, olivine, orthopyroxene, pigeonite, subcalcic augite and Ti-chromite in a finer grained matrix containing minor barite.

Geochemistry: Olivine (Fa30.0-41.3, FeO/MnO = 87-97, N = 3), orthopyroxene (Fs35.7Wo4.2, FeO/MnO = 56), pigeonite (Fs25.2-29.8Wo7.9-10.1, FeO/MnO = 52-63, N = 2), subcalcic augite (Fs15.8Wo30.1, FeO/MnO = 56), anorthite (An92.0-95.0Or0.2-0.1, N = 2).

Classification: Lunar (feldspathic breccia).

Specimens: 14.11 g including a polished slice at UWB; main mass with Kuntz.

Data from:
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2017 Sep
Mass (g):67
Class:Lunar (feldsp. breccia)
Shock stage:low
Weathering grade:low
Fayalite (mol%):30.0-41.3
Ferrosilite (mol%):25.2-35.7
Wollastonite (mol%):7.9-4.2
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):14.11
Type spec location:UWB
Main mass:F. Kuntz
Comments:K371; 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)
UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
Kuntz: Fabien Kuntz, France; Website (private address)
References: Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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     This is 1 of 9772 approved meteorites from (Northwest Africa) (plus 1862 unapproved names)

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