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Northwest Africa 13958
Basic information Name: Northwest Africa 13958
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13958
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 15 kg
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 21 Jun 2021
Writeup from MB 110:

Northwest Africa 13958 (NWA 13958)

(Northwest Africa)

Purchased: 2019 Oct

Classification: Primitive achondrite (Winonaite)

History: Purchased by Aziz Zad in October 2019 from a dealer in Ouargla, Algeria.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Triple grain junction texture (mean grainsize ~0.2 mm). Aggregate of forsterite, enstatite, diopside and plagioclase with accessory kamacite, taenite and troilite.

Geochemistry: Forsterite (Fa3.4-3.9, FeO/MnO = 18-19, N = 4), enstatite (Fs4.4-4.7Wo1.8-2.0, FeO/MnO = 11-13, N = 4), diopside (Fs1.0-1.9Wo44.4-45.7, FeO/MnO = 7-10, N = 4), plagioclase (An21.3-21.9Or2.5-3.3, N = 3).

Classification: Winonaite.

Specimens: 40 g including one polished thin section at UWB; remainder held jointly by  WangZ and Mr. A. Zad.

Data from:
  Table 0
  Line 0:
Place of purchase:Ouargla
Date:P 2019 Oct
Mass (g):15000
Shock stage:low
Weathering grade:low
Fayalite (mol%):3.4-3.9
Ferrosilite (mol%):4.4-4.7; 1.0-1.9
Wollastonite (mol%):1.8-2.0; 44.4-45.7
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):39.8
Type spec location:UWB
Main mass:WangZ/A. Zad
Comments:Work name WZY-19; 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)
WangZ: Ziyao Wang, Hebei GEO University North Campus, Huai An dong road 127, Shijiazhuang, Hebei Province , China (private address; updated 25 Jun 2021)
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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