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Northwest Africa 14050
Basic information Name: Northwest Africa 14050
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14050
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 69.6 g
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 280 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 6 Jul 2021
Writeup from MB 110:

Northwest Africa 14050 (NWA 14050)

(Northwest Africa)

Purchased: 2020 Dec

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased by Tom Thiegs in December 2020 from a Moroccan dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Breccia composed of relatively small mineral clasts of anorthite, olivine, low-Ca pyroxene, subcalcic augite, augite, subcalcic ferroaugite plus rare microgabbroic lithic clasts set in a sparse fine-grained matrix containing accessory ilmenite, zircon, Ti-chromite, troilite, baddeleyite and minor secondary barite. Phases observed in BSE, from dark to bright: Ca pyroxene (Fe-rich), ilmenite, zirconolite (Y, REE present), baddeleyite, monazite (Ce>La)

Geochemistry: Olivine (Fa24.6-55.3, FeO/MnO = 89-104, N = 5), low-Ca pyroxene (Fs31.7-50.5Wo2.3-4.0, FeO/MnO = 55-61, N = 3), subcalcic augite (Fs21.7Wo31.3, FeO/MnO = 48), subcalcic ferroaugite (Fs61.8Wo31.2, FeO/MnO = 74), augite (Fs14.3Wo42.9, FeO/MnO = 56), anorthite (An96.5-98.6Or0.1-0.0, N = 3).

Classification: Lunar (feldspathic breccia).

Specimens: 14.58 g including one polished thin section at UWB; remainder with Mr. T. Thiegs.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2020 Dec
Mass (g):69.6
Class:Lunar (feldsp. breccia)
Shock stage:low
Weathering grade:low
Fayalite (mol%):24.6-55.3
Ferrosilite (mol%):31.7-50.5; 21.7-61.8; 14.3
Wollastonite (mol%):2.3-4.0; 31.2-31.3; 42.9
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):14.6
Type spec location:UWB
Main mass:T. Thiegs
Comments:Work name TGT002; 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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
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     This is 1 of 8636 approved meteorites from (Northwest Africa) (plus 1884 unapproved names)

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