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Northwest Africa 14962
Basic information Name: Northwest Africa 14962
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14962
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 64.1 g
Classification
  history:
Recommended:  Martian (nakhlite)    [explanation]

This is 1 of 29 approved meteorites classified as Martian (nakhlite).   [show all]
Search for other: Martian meteorites
Comments: Approved 25 May 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14962 (NWA 14962)

(Northwest Africa)

Purchased: 2021 Dec

Classification: Martian meteorite (Nakhlite)

History: Purchased by Terry Boudreaux in December 2021 from a dealer in Zagora, Morocco.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL). Aggregate (mean grainsize ~0.7 mm) of stubby prismatic grains of augite and subordinate equant, anhedral grains of olivine, together with minor intercumulus birefringent plagioclase, chlorapatite and Fe-Ti oxide. Augite exhibits both simple and polysynthetic twinning, and some grains are partially mantled by exsolved pigeonite. Olivine contains some inclusions of medium-Ti chromite, rare melt inclusions composed of alkali feldspathic glass+chlorapatite+pyrrhotite, and minor veinlets (very pale brownish-green in thin section) of "iddingsite-like" material.

Geochemistry: Olivine (Fa56.3-56.9, FeO/MnO = 51-52, N = 4), augite (Fs21.1-27.5Wo39.6-30.2, FeO/MnO = 28-31, N = 3), low-Ca pyroxene in exsolved pigeonite rim (Fs45.6-46.9Wo5.3-6.0, FeO/MnO = 32, N = 3), plagioclase (An32.4-34.9Or6.1-3.9, N = 3).

Classification: Nakhlite.

Specimens: 13.0 g including one polished thin section at UWB; remainder with Mr. T. Boudreaux.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Zagora
Date:P 2021 Dec
Mass (g):64.12
Pieces:1
Class:Martian (nakhlite)
Shock stage:low
Weathering grade:low
Fayalite (mol%):56.3-56.9
Ferrosilite (mol%):21.1-27.5; 45.6-46.9
Wollastonite (mol%):39.6-30.2; 5.3-6.0
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):13.0
Type spec location:UWB
Main mass:T. Boudreaux
Comments:Work name RC155.1; 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)
Boudreaux: Terry Boudreaux, Illinois, United States (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8636 approved meteorites from (Northwest Africa) (plus 1884 unapproved names)

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