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Northwest Africa 13908
Basic information Name: Northwest Africa 13908
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13908
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 1680 g
Classification
  history:
Recommended:  Lunar (melt breccia)    [explanation]

This is 1 of 15 approved meteorites classified as Lunar (melt breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 25 Apr 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13908 (NWA 13908)

(Northwest Africa)

Purchased: 2020 Dec

Classification: Lunar meteorite (melt breccia)

History: Purchased in Agadir, Morocco by Aziz Habibi in December 2020.

Physical characteristics: A single dark gray, relatively fine grained stone (1680 g) with an exterior shiny patina.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Breccia composed of mineral clasts of anorthite, olivine, pigeonite, exsolved pigeonite and augite plus mafic lithic clasts in a very fine grained matrix containing metal (with variable Fe:Ni intermediate between values for kamacite and taenite), chromite and ilmenite. Mafic lithic clasts include microgabbro and quench-textured basalt lithologies. The matrix exhibits some fluidal alignment of elongate mineral clasts and is sparsely microvesicular.

Geochemistry: Olivine (Fa24.0-37.5, FeO/MnO = 77-92, N = 5), pigeonite (Fs25.3-41.1Wo8.0-16.6, FeO/MnO = 40-59, N = 4), subcalcic augite (Fs21.1-28.6Wo27.1-32.6, FeO/MnO = 51-53, N = 2), augite (Fs23.3Wo40.9, FeO/MnO = 52), low-Ca pyroxene host (Fs46.0Wo3.2, FeO/MnO = 67), augite exsolution lamella (Fs19.9Wo42.8, FeO/MnO = 58), anorthite (An96.5-97.6Or0.2-0.0, N = 3).

Classification: Lunar (melt breccia). This material has textural, petrologic and mineral chemical features consistent with being paired to the stones classified as NWA 13676 and NWA 13757.

Specimens: 23.0 g including a polished mount at UWB; remainder with Mr. A. Habibi.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Agadir
Date:P 2020 Dec
Mass (g):1680
Pieces:1
Class:Lunar (melt breccia)
Shock stage:high
Weathering grade:low
Fayalite (mol%):24.0-37.5
Ferrosilite (mol%):25.3-41.1; 21.1-28.6; 23.3
Wollastonite (mol%):8.0-16.6; 27.1-32.6; 40.9
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):23.0
Type spec location:UWB
Main mass:A. Habibi
Comments:Work name AH 1007; 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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Catalogs:
References: Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8777 approved meteorites from (Northwest Africa) (plus 1879 unapproved names)

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