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Northwest Africa 14296
Basic information Name: Northwest Africa 14296
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14296
Observed fall: No
Year found: 2020
Country: Mali
Mass:help 230 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  L4
Recommended:  L4    [explanation]

This is 1 of 2060 approved meteorites (plus 5 unapproved names) classified as L4.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 29 Jan 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14296 (NWA 14296)

Mali

Purchased: 2020 Apr

Classification: Ordinary chondrite (L4)

History: Purchased by Mbark Arjdal in April 2020 from a Malian dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Well formed, equilibrated chondrules are set in a fine grained matrix containing kamacite, troilite, merrillite, low-Ti chromite and minor taenite. Most chondrules have glassy matrices but some are plagioclase-bearing.

Geochemistry: Olivine (Fa25.1±0.1, range Fa25.0-25.2, N = 5), low-Ca pyroxene (Fs21.1±0.2Wo0.7±0.1, range Fs20.8-21.2Wo1.3-1.9, N = 5), augite (Fs7.6±0.2Wo45.6±0.7, range Fs7.4-7.8Wo45.0-46.3, N = 3).

Classification: Ordinary chondrite (L4).

Specimens: 23.5 g including one polished thin section at UWB; remainder with Mr. M. Arjdal.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Mali
Date:P 2020 Apr
Mass (g):230
Pieces:1
Class:L4
Shock stage:S2
Weathering grade:W0/1
Fayalite (mol%):25.3±0.2
Ferrosilite (mol%):21.4±0.3
Wollastonite (mol%):1.0±0.1
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):23.5
Type spec location:UWB
Main mass:M. Arjdal
Comments:Work name Arj ZM 742; 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:

Mali
Coordinates:Unknown.

Statistics:
     This is 1 of 112 approved meteorites from Mali (plus 3 unapproved names)
Also see:
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Revision
  history:
  This lists important revisions made to data for this record.

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