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Northwest Africa 11954
Basic information Name: Northwest Africa 11954
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11954
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 270 g
Meteoritical Bulletin:  MB 107  (2018)  LL3
Recommended:  LL3    [explanation]

This is 1 of 486 approved meteorites classified as LL3.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 15 Sep 2018
Writeup from MB 107:

Northwest Africa 11954 (NWA 11954)

(Northwest Africa)

Purchased: 2017 Nov

Classification: Ordinary chondrite (LL3)

History: Purchased by Fabien Kuntz in November 2017 from a dealer in Zagora, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Well-formed chondrules (apparent diameter 690±450 µm) are set in relatively fine grained matrix containing stained metal, merrillite and chlorapatite.

Geochemistry: Olivine (Fa1.3-44.0, Cr2O3 in ferroan examples 0.06-0.36 wt.%, mean 0.12±0.12 wt.%, N = 7), orthopyroxene (Fs2.5-15.1Wo0.4-1.5, N = 3), clinopyroxene (Fs9.3-12.5Wo39.6-37.4, N = 2). Magnetic susceptibility log χ (× 10-9 m3/kg) = 3.80.

Classification: Ordinary chondrite (LL3). LL classification from magnetic susceptibility.

Specimens: 22.41 g including one polished thin section at UWB; remainder with FKuntz.

Data from:
  Table 0
  Line 0:
Place of purchase:Zagora
Date:P 2017 Nov
Mass (g):270
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):1.3-44.0
Ferrosilite (mol%):2.5-15.1
Wollastonite (mol%):0.4-1.5
Magnetic suscept.:3.80
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):22.41
Type spec location:UWB
Main mass:FKuntz
Comments:Work name K372; submitted by A. Irving
   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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
Kuntz: Fabien Kuntz, France; Website (private address)
References: Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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     This is 1 of 9689 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

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