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Northwest Africa 14967
Basic information Name: Northwest Africa 14967
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14967
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 3.49 kg
Recommended:  Ureilite    [explanation]

This is 1 of 630 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 20 Jun 2022
Writeup from MB 111:

Northwest Africa 14967 (NWA 14967)

(Northwest Africa)

Purchased: 2022 Mar

Classification: Ureilite

History: Purchased by Mbark Arjdal in March 2022 from an Algerian dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Protogranular aggregate (mean grainsize ~0.3 mm) of olivine and pigeonite with accessory low-Ca pyroxene, subcalcic augite, graphite, kamacite and sulfides (Cr-troilite and daubreelite in exsolution relationship). Olivine grains have reduced magnesian rims containing fine blebby Fe metal (altered in part to Fe oxides).

Geochemistry: Olivine cores (Fa11.7-21.7, Cr2O3 0.59-0.77 wt.%, CaO 0.32-0.34 wt.%, N = 3), olivine rims (Fa1.3-3.6, N = 3), pigeonite (Fs16.4-18.6Wo6.8-7.1, Al2O3 0.64-0.93 wt.%, Cr2O3 1.0-1.1 wt.%, TiO2 0.06-0.09 wt.%, N = 4), low-Ca pyroxene (Fs2.6Wo1.3; Fs7.5Wo4.5; N = 2), subcalcic augite (Fs3.4Wo28.6).

Classification: Ureilite.

Specimens: 31.3 g including one polished thin section at UWB; remainder with Mr. M. Arjdal.

Data from:
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2022 Mar
Mass (g):3487
Shock stage:high
Weathering grade:low
Fayalite (mol%):20.6-21.7; 1.3-3.6
Ferrosilite (mol%):16.4-18.6; 2.6-7.5; 3.4
Wollastonite (mol%):6.8-7.1; 1.3-4.5; 28.6
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):31.3
Type spec location:UWB
Main mass:M. Arjdal
Comments:Work name Arj ZM 333; 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 Meteoritical Bulletin, no. 111, in preparation (2022)
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     This is 1 of 9116 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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