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Northwest Africa 11056
Basic information Name: Northwest Africa 11056
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11056
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 289 g
Meteoritical Bulletin:  MB 106  (2018)  LL3
Recommended:  LL3    [explanation]

This is 1 of 371 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 Jun 2017
Writeup from MB 106:

Northwest Africa 11056 (NWA 11056)

(Northwest Africa)

Purchased: 2016 Oct

Classification: Ordinary chondrite (LL3)

History: Purchased by John Higgins in October 2016 from a dealer in Nouakchott, Mauritania.

Petrography: (A. Irving and S. Kuehner, UWS) Fairly closely packed, well-formed chondrules (apparent diameter 500±300 μm) are set in a sparse, fine-grained matrix containing altered metal.

Geochemistry: Olivine (Fa0.4-47.3, Cr2O3 in ferroan examples 0.05-0.11 wt.%, mean 0.08±0.03 wt.%, N = 7), orthopyroxene (Fs2.5-22.7Wo0.2-2.2, N = 3), pigeonite (Fs31.0Wo16.8), augite (Fs11.2Wo45.3). Magnetic susceptibility log χ (× 10-9 m3/kg) = 3.73.

Classification: Ordinary chondrite (LL3).

Specimens: 23.95 g including one polished thin section at UWB; remainder with Mr. J. Higgins.

Data from:
  Table 0
  Line 0:
Place of purchase:Nouakchott, Mauritania
Date:P 2016 Oct
Mass (g):289
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):0.4-47.3
Ferrosilite (mol%):2.5-22.7
Wollastonite (mol%):0.2-2.2
Magnetic suscept.:3.73
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):23.95
Type spec location:UWB
Main mass:J. Higgins
Comments:JH16-14; 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)
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 7912 approved meteorites from (Northwest Africa) (plus 1974 unapproved names)

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