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Northwest Africa 13962
Basic information Name: Northwest Africa 13962
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13962
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 250 g
Classification
  history:
Recommended:  Ureilite    [explanation]

This is 1 of 623 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 6 May 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13962 (NWA 13962)

(Northwest Africa)

Purchased: 2020 Sep

Classification: Ureilite

History: Purchased by Shun-Chung Yang in September 2020 from an Algerian dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Protogranular texture. Relatively olivine-rich. Composed of olivine (~85 vol.%) and twinned pigeonite (~15 vol.%) together with accessory graphite, kamacite, schreibersite, Cr-troilite and daubreelite. Olivine grains have magnesian reduced rims containing blebby Fe metal (some altered).

Geochemistry: Olivine (cores Fa19.2-21.5, N = 4; rims Fa1.7-3.1, N = 4), pigeonite (Fs17.6±0.0Wo9.0-9.2, N = 4).

Classification: Ureilite.

Specimens: 24.0 g including one polished thin section at UWB; remainder with Mr. S.-C. Yang.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2020 Sep
Mass (g):250
Pieces:1
Class:Ureilite
Shock stage:low
Weathering grade:low
Fayalite (mol%):19.2-21.5; 1.7-3.1
Ferrosilite (mol%):17.6±0.0
Wollastonite (mol%):9.0-9.2
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):24.0
Type spec location:UWB
Main mass:S.-C. Yang
Comments:Work name SCY-15; 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 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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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9013 approved meteorites from (Northwest Africa) (plus 1869 unapproved names)

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