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Northwest Africa 14140
Basic information Name: Northwest Africa 14140
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14140
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 1488 g
Classification
  history:
Meteoritical Bulletin:  MB 110  (2022)  Lunar (feldsp. breccia)
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 336 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 31 Aug 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14140 (NWA 14140)

(Northwest Africa)

Purchased: 2021 Jan

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased by Dr. David Gregory in January 2021 from a dealer in Zagora, Morocco.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Breccia composed predominantly of mineral clasts of anorthite and olivine plus minor pigeonite and rare low-Ca pyroxene in a fine grained matrix containing troilite and minor secondary barite. Some lithic clasts composed almost entirely of anorthite are present.

Geochemistry: Olivine (Fa21.9-41.1, FeO/MnO = 85-107, N = 6), low-Ca pyroxene (Fs32.1Wo2.7, FeO/MnO = 52), pigeonite (Fs18.3-20.2Wo18.3-11.9, FeO/MnO = 45-51, N = 2), anorthite (An96.6-97.2Or0.1-0.0, N = 3).

Classification: Lunar (feldspathic breccia).

Specimens: 21.9 g in the form of a polished endcut at UWB; remainder with DGregory.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Zagora
Date:P 2021 Jan
Mass (g):1488
Pieces:1
Class:Lunar (feldsp. breccia)
Shock stage:low
Weathering grade:low
Fayalite (mol%):21.9-41.1
Ferrosilite (mol%):32.1; 18.3-20.2
Wollastonite (mol%):2.7; 18.3-11.9
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):21.9
Type spec location:UWB
Main mass:DGregory
Comments:Work name RC144.4; 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)
DGregory: David Gregory, 230 First Avenue, Suite 108, St. Thomas, Ontario N5R 4P5, Canada (private address)
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 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)
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Revision
  history:
  This lists important revisions made to data for this record.

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