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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 604 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 Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8402 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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