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Northwest Africa 14173
Basic information Name: Northwest Africa 14173
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14173
Observed fall: No
Year found: 2020
Country: Mali
Mass:help 458 g
Classification
  history:
Recommended:  L4    [explanation]

This is 1 of 1999 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 20 Dec 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14173 (NWA 14173)

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 J. Boesenberg, BrownU) Closely packed, well-formed equilibrated chondrules are set in a sparse matrix containing altered kamacite, troilite, chromite and merrillite.

Geochemistry: Olivine (Fa24.3±0.4, range Fa23.9-25.1, N = 7), low-Ca pyroxene (Fs20.5±0.2Wo1.0±0.2, range Fs20.3-20.7Wo0.7-1.1, N = 4).

Classification: Ordinary chondrite (L4).

Specimens: 38 g including one polished thin section at UWB; remainder with Mr. M. Arjdal.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Mali
Date:P 2020 Apr
Mass (g):458
Pieces:1
Class:L4
Shock stage:S2
Weathering grade:W1/2
Fayalite (mol%):24.3±0.4
Ferrosilite (mol%):20.5±0.2
Wollastonite (mol%):1.0±0.2
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):38
Type spec location:UWB
Main mass:M. Arjdal
Comments:Work name Arj ZM 875; 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)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
Catalogs:
References: Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Photos:
CreditPhotos
Public domain photographs:
A. Irving   
Geography:

Mali
Coordinates:Unknown.

Statistics:
     This is 1 of 80 approved meteorites from Mali (plus 1 unapproved name)

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