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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:
Recommended:  L4    [explanation]

This is 1 of 1946 approved meteorites (plus 4 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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
Find references in NASA ADS:
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Geography:

Mali
Coordinates:Unknown.

Statistics:
     This is 1 of 69 approved meteorites from Mali (plus 1 unapproved name)

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