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Northwest Africa 11186
Basic information Name: Northwest Africa 11186
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11186
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 180.7 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  H4
Recommended:  H4    [explanation]

This is 1 of 6033 approved meteorites (plus 11 unapproved names) classified as H4.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 8 Mar 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11186 (NWA 11186)

(Northwest Africa)

Purchased: 2016 May

Classification: Ordinary chondrite (H4)

History: Purchased by Roger Jones in May 2016 from a dealer in Talsint, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Well-formed, relatively small chondrules are set in a fairly coarse grained matrix containing altered metal.

Geochemistry: Olivine (Fa20.4-20.8, N = 3), orthopyroxene (Fs17.7-18.0Wo3.8-1.2, N = 3), clinopyroxene (Fs6.5-6.8Wo45.7-44.8, N = 2). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.78.

Classification: Ordinary chondrite (H4).

Specimens: 21.69 g plus one polished thin section at UWB; remainder with Mr. R. Jones.

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Talsint
Date:P 2016 May
Mass (g):180.7
Pieces:1
Class:H4
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):20.4-20.8
Ferrosilite (mol%):17.7-18.0
Wollastonite (mol%):3.8-1.2
Magnetic suscept.:4.78
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):21.69
Type spec location:UWB
Main mass:R. Jones
Comments:RBJ72; 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)
Catalogs:
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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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

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