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Northwest Africa 14741
Basic information Name: Northwest Africa 14741
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14741
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 19.1 g
Classification
  history:
Recommended:  Lunar (bas. breccia)    [explanation]

This is 1 of 18 approved meteorites classified as Lunar (bas. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 20 Jun 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14741 (NWA 14741)

(Northwest Africa)

Purchased: 2021 Nov

Classification: Lunar meteorite (basaltic breccia)

History: Purchased by Matthew Stream in November 2021 from a dealer in Agadir, Morocco.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) The studied small endcut is a breccia consisting of several mare basalt clasts (exhibiting intergranular and microgabbroic textures) set within a fine grained matrix. The matrix is highly microvesicular (with pervasive calcite infillings) and has a quenched melt rock texture surrounding numerous small mineral clasts. The larger lithic clasts are composed of olivine, zoned clinopyroxene and calcic plagioclase (apparently crystalline) together with accessory ilmenite, baddeleyite, merrillite (rare earth element-bearing), medium-Ti chromite, troilite and rare kamacite. Some secondary barite is present in the matrix.

Geochemistry: Olivine (Fa29.1-53.6, FeO/MnO = 95-106, N = 6), pigeonite (Fs24.3Wo13.9, FeO/MnO = 57), ferropigeonite (Fs68.9Wo21.2, FeO/MnO = 69), subcalcic augite (Fs16.9-22.8Wo35.8-34.9, FeO/MnO = 48-54, N = 2), plagioclase (An83.2-84.5Or0.5-0.3, N = 3).

Classification: Lunar (basaltic breccia, microvesicular).

Specimens: 3.82 g in the form of a polished endcut at UWB; remainder with Mr. M. Stream.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Agadir
Date:P 2021 Nov
Mass (g):19.1
Pieces:1
Class:Lunar (bas. breccia)
Shock stage:moderate
Weathering grade:low
Fayalite (mol%):29.1-53.6
Ferrosilite (mol%):24.3; 68.9; 16.9-22.8
Wollastonite (mol%):13.9; 21.2; 35.8-34.9
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):3.80
Type spec location:UWB
Main mass:M. Stream
Comments:Work name MS21-8; 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 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 8495 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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