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Northwest Africa 14042
Basic information Name: Northwest Africa 14042
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14042
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 459 g
Recommended:  Winonaite    [explanation]

This is 1 of 83 approved meteorites (plus 1 unapproved name) classified as Winonaite.   [show all]
Search for other: Primitive achondrites, Winonaites
Comments: Approved 6 Jul 2021
Writeup from MB 110:

Northwest Africa 14042 (NWA 14042)

(Northwest Africa)

Purchased: 2021 Mar

Classification: Primitive achondrite (Winonaite)

History: Purchased by Rachid Chaoui in March 2021 from a Mauritanian dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Triple grain junction texture. Composed of forsterite, diopside, enstatite and sodic plagioclase together with accessory kamacite, taenite, troilite and chlorapatite.

Geochemistry: Forsterite (Fa4.0-4.3, FeO/MnO = 16-20, N = 4), diopside (Fs1.4-1.8Wo44.9-45.7, FeO/MnO = 9-12, N = 4), enstatite (Fs4.8-4.9Wo1.8-2.0, FeO/MnO = 11-14, N = 4), plagioclase (Ab75.4-76.0An20.8-21.0Or3.7-3.0, N = 2).

Classification: Winonaite.

Specimens: 20.6 g including one polished endcut at UWB; remainder with Mr. R. Chaoui.

Data from:
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P 2021 Mar
Mass (g):459
Shock stage:low
Weathering grade:low
Fayalite (mol%):4.0-4.3
Ferrosilite (mol%):4.8-4.9; 1.4-1.8
Wollastonite (mol%):1.8-2.0; 44.9-45.7
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):20.6
Type spec location:UWB
Main mass:R. Chaoui
Comments:Work name RC145.2; 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 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
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     This is 1 of 9368 approved meteorites from (Northwest Africa) (plus 1875 unapproved names)

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