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Northwest Africa 14658
Basic information Name: Northwest Africa 14658
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14658
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 2.68 kg
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  Diogenite
Recommended:  Diogenite    [explanation]

This is 1 of 522 approved meteorites classified as Diogenite.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 8 May 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14658 (NWA 14658)

(Northwest Africa)

Purchased: 2021 Sep

Classification: HED achondrite (Diogenite)

History: Purchased by Rachid Chaoui in September 2021 from a dealer in Nouakchott, Mauritania.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Unbrecciated with coarse-grained protogranular texture (grainsize up to 5 mm). Composed predominantly of orthopyroxene accompanied by much smaller grains of olivine plus accessory chromite (with low Ti and minor V) and troilite (with Fe metal inclusions having variable Ni content).

Geochemistry: Orthopyroxene (Fs23.7-25.1Wo2.1-2.2, FeO/MnO = 28-29, N = 3), olivine (Fa 23.2-28.0, FeO/MnO = 39-44, N = 3).

Classification: Diogenite (protogranular).

Specimens: 38.2 g including two polished thins section at UWB; remainder with Mr. R. Chaoui.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Nouakchott
Date:P 2021 Sep
Mass (g):2680
Pieces:1
Class:Diogenite
Shock stage:low
Weathering grade:low
Fayalite (mol%):23.2-28.0
Ferrosilite (mol%):23.7-25.1
Wollastonite (mol%):2.1-2.2
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):38.2
Type spec location:UWB
Main mass:R. Chaoui
Comments:Work name RC151.2; 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 9627 approved meteorites from (Northwest Africa) (plus 1865 unapproved names)
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Revision
  history:
  This lists important revisions made to data for this record.

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