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Northwest Africa 13914
Basic information Name: Northwest Africa 13914
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13914
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 825 g
Recommended:  Ureilite    [explanation]

This is 1 of 604 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 10 Apr 2021
Writeup from MB 110:

Northwest Africa 13914 (NWA 13914)

(Northwest Africa)

Purchased: 2018

Classification: Ureilite

History: Purchased by Ziyao Wang in 2018 from a dealer in Agadir, Morocco.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Highly recrystallized aggregate of finely polygranular olivine (with Mg-rich reduced rims), pigeonite and orthopyroxene with accessory graphite, troilite and kamacite. Original Fe metal along grain boundaries and throughout recrystallized olivine grains has been extensively altered to secondary Fe oxyhydroxides (such that the studied thin section is almost completely opaque).

Geochemistry: Olivine (cores Fa21.8-24.4, N = 4; rims Fa4.3-6.0, N = 4), low-Ca pyroxene (Fs12.7-15.0Wo2.3-2.7, N = 3), pigeonite (Fs11.3-17.4Wo8.0-8.6, N = 3).

Classification: Ureilite (shock-recrystallized).

Specimens: 20.1 g including one polished thin section at UWB; remainder with WangZ.

Data from:
  Table 0
  Line 0:
Place of purchase:Agadir
Date:P 2018
Mass (g):825
Shock stage:high
Weathering grade:moderate
Fayalite (mol%):21.8-24.4; 3.5-6.0
Ferrosilite (mol%):11.3-17.4; 12.7-15.0
Wollastonite (mol%):8.0-8.6; 2.3-2.7
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):20.1
Type spec location:UWB
Main mass:WangZ
Comments:Work name WZY-09; 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 Meteoritical Bulletin, no. 110, in preparation (2021)
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Ziyao Wang            

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

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