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Northwest Africa 14915
Basic information Name: Northwest Africa 14915
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14915
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 2.87 kg
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  Mesosiderite
Recommended:  Mesosiderite    [explanation]

This is 1 of 270 approved meteorites classified as Mesosiderite.   [show all]
Search for other: Mesosiderites, Metal-rich meteorites
Comments: Approved 20 Jun 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14915 (NWA 14915)

(Northwest Africa)

Purchased: 2021 Sep

Classification: Mesosiderite

History: Purchased by Juan Avilés Poblador in September 2021 from a Moroccan dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Heterogeneous breccia composed predominantly of zoned orthopyroxene (some grains up to 7 mm), calcic plagioclase and altered metal (overall ~50 vol.%) together with accessory Cu-bearing pentlandite, troilite, aluminous low-Ti chromite (V-bearing), ilmenite and merrillite. A 1.7 cm by 1 cm cataclastic dunite clast composed predominantly of olivine exhibiting undulose extinction is present in one of the two studied thin sections.

Geochemistry: Low-Ca pyroxene (cores Fs23.3-27.0Wo2.5-2.9, FeO/MnO = 30-33, N = 4; rims Fs28.7-34.0Wo2.5-4.0, FeO/MnO = 21-26, N = 4), augite (Fs16.4-17.1Wo41.9-40.9, FeO/MnO = 20-21, N = 2), plagioclase (An89.9-92.1Or0.2-0.3, N = 3).

Classification: Mesosiderite.

Specimens: 259.4 g including two polished thin sections at UWB; remainder with Mr. J. Poblador.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2021 Sep
Mass (g):2870
Pieces:2
Class:Mesosiderite
Shock stage:low
Weathering grade:moderate
Ferrosilite (mol%):24.4-27.0; 31.7-34.0
Wollastonite (mol%):2.7-2.9; 2.5-4.0
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):259.4
Type spec location:UWB
Main mass:J. Poblador
Comments:Work names JAP21-1 and JAP21-2; 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. ?
Find references in NASA ADS:
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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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