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Northwest Africa 10799
Basic information Name: Northwest Africa 10799
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10799
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 3.26 kg
Meteoritical Bulletin:  MB 105  (2016)  L3
Recommended:  L3    [explanation]

This is 1 of 726 approved meteorites (plus 1 unapproved name) classified as L3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 13 Aug 2016
Writeup from MB 105:

Northwest Africa 10799 (NWA 10799)

(Northwest Africa)

Purchased: 2016 Feb

Classification: Ordinary chondrite (L3)

History: Purchased by Matthew Martin in February 2016 from a Moroccan dealer at the Tucson Gem and Mineral Show.

Petrography: (A. Irving and S. Kuehner, UWS) Closely-packed, well-formed chondrules (apparent diameter 500±400 µm) are set in a sparse fine grained, black matrix.

Geochemistry: Olivine (Fa1.2-49.9, Cr2O3 in ferroan examples 0.08-0.23 wt.%, mean 0.16±0.05 wt.%, N = 8), orthopyroxene (Fs1.9-6.7Wo0.4-2.3, N = 3), pigeonite (Fs39.1Wo5.9), subcalcic augite (Fs8.9-14.2Wo36.7-32.0, N = 2).

Classification: Ordinary chondrite (L3).

Specimens: 20.65 g including one polished thin section at UWB; 423 g with Mr. M. Martin; 2832 g main mass with Mr. R. Falls.

Data from:
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2016 Feb
Mass (g):3255
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):1.2-49.9
Ferrosilite (mol%):1.9-6.7; 39.1
Wollastonite (mol%):0.4-2.3; 5.9
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.65
Type spec location:UWB
Main mass:R. Falls
Comments:MM16-2; 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 Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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     This is 1 of 7885 approved meteorites from (Northwest Africa) (plus 1958 unapproved names)

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