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Northwest Africa 16267
Basic information Name: Northwest Africa 16267
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 16267
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 1977 g
Classification
  history:
Meteoritical Bulletin:  MB 112  (2023)  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 10 Nov 2023
Writeuphelp
Writeup from MB 112:

Northwest Africa 16267 (NWA 16267)

(Northwest Africa)

Purchased: 2022 Oct

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased by Luc Labenne in October 2022 from a Moroccan dealer.

Petrography: (A. Irving, UWS, and P. Carpenter, WUSL) Breccia composed of angular mineral clasts of calcic plagioclase, olivine and low-Ca pyroxenes, plus some fine-grained, melt-textured lithic clasts, within a very fine grained fragmental matrix. Some olivine is altered to serpentine-like phyllosilicates with low oxide sums and elevated FeO/MnO ratios. Accessory phases include Mg-ilmenite, Ti-free chromite, pentlandite, troilite and rare kamacite (altered to secondary Fe oxides).

Geochemistry: Olivine (Fa20.2-43.2, FeO/MnO = 74-102, N = 10), low-Ca pyroxene (Fs17.4-18.8Wo3.6-3.8, FeO/MnO = 43-52, N = 3), pigeonite (Fs25.1-31.7Wo13.0-8.5; FeO/MnO = 41-59, N = 4), subcalcic augite (Fs19.7-20.6Wo29.6-29.4, FeO/MnO = 47-49, N = 2), anorthite (An96.6-97.8Or0.1-0.0, N = 4), calcic plagioclase (An75.7Or0.6; An85.0Or0.4; N = 2).

Classification: Lunar (feldspathic breccia).

Specimens: 23.7 g including one polished thin section at UWB; remainder with Labenne.

Data from:
  MB112
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2022 Oct
Mass (g):1977
Pieces:1
Class:Lunar (feldsp. breccia)
Shock stage:low
Weathering grade:low
Fayalite (mol%):20.2-43.2
Ferrosilite (mol%):17.4-18.8;25.1-31.7; 19.7-20.6
Wollastonite (mol%):3.6-3.8; 13.0-8.5; 29.6-29.4
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):23.7
Type spec location:UWB
Main mass:Labenne
Comments:Work name LAB23-2; submitted by A. Irving
Institutions
   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)
Labenne: 23, rue de Esperance, 75013 Paris, France; Website (private address; updated 29 Aug 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 112, in preparation (2023)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9772 approved meteorites from (Northwest Africa) (plus 1862 unapproved names)

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