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Northwest Africa 11190
Basic information Name: Northwest Africa 11190
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11190
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 1000 g
Meteoritical Bulletin:  MB 106  (2018)  L4
Recommended:  L4    [explanation]

This is 1 of 2000 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 8 Mar 2017
Writeup from MB 106:

Northwest Africa 11190 (NWA 11190)

(Northwest Africa)

Purchased: 2017 Jan

Classification: Ordinary chondrite (L4)

History: Purchased by Adam Aaronson in Temara, Morocco, in January 2017.

Petrography: (A. Irving and S. Kuehner, UWS) Well-formed chondrules (apparent diameter 450±200 μm, one 3.8 mm) are set in a fairly coarse grained matrix containing stained metal.

Geochemistry: Olivine (Fa25.2-25.8, N = 6; Fa21.2, N = 1), orthopyroxene (Fs5.6Wo0.2), pigeonite (Fs11.7Wo19.7; Fs18.6Wo7.0; N = 2), augite (Fs3.4Wo43.3).

Classification: Ordinary chondrite (L4).

Specimens: 21 g including one polished thin section at UWB; remainder with Aaronson.

Data from:
  Table 0
  Line 0:
Place of purchase:Temara
Date:P 2017 Jan
Mass (g):1000
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):25.2-25.8
Ferrosilite (mol%):5.6; 18.6; 11.7; 43.3
Wollastonite (mol%):0.2; 7.0; 19.7; 43.3
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):21
Type spec location:UWB
Main mass:A. Aaronson
Comments:M1988; 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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)
References: Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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