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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
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 658 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 20 Jun 2022
Writeuphelp
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:
  MB111
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2022 Mar
Mass (g):3487
Pieces:many
Class:Ureilite
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
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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
Catalogs:
References: Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9589 approved meteorites from (Northwest Africa) (plus 1869 unapproved names)
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Revision
  history:
  This lists important revisions made to data for this record.

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