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Northwest Africa 8263
Basic information Name: Northwest Africa 8263
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8263
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 226 g
Meteoritical Bulletin:  MB 104  (2015)  L3
Recommended:  L3    [explanation]

This is 1 of 727 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 28 Oct 2015
Writeup from MB 104:

Northwest Africa 8263 (NWA 8263)

(Northwest Africa)

Purchased: 2014 Jan

Classification: Ordinary chondrite (L3)

History: Purchased by Fabien Kuntz in January 2014 from a dealer in Ouarzazate, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Relatively closely-packed, medium-sized (0.6-3 mm, mean 1.7±0.9mm), well-formed chondrules in a fine matrix. Minerals are olivine, orthopyroxene, pigeonite, subcalcic augite, augite, sodic plagioclase, chromite, troilite and altered kamacite.

Geochemistry: Olivine (Fa5.6-38.6, N = 8; Cr2O3 in ferroan olivine = 0.05-0.11 wt.%, mean 0.07±0.03 wt.%, N = 6), orthopyroxene (Fs3.3-30.0Wo0.2-2.1, N = 3), pigeonite (Fs5.4Wo7.8), subcalcic augite (Fs23.7Wo26.0), augite (Fs5.9Wo47.8).

Classification: Ordinary chondrite L3. Estimation of subtype L3.5 based on histograms of Cr2O3 distribution in ferroan olivine given in Fig. 4 of Grossman and Brearley (2005).

Specimens: 25.4 g including one polished thin section at UWB. The remainder is held by Kuntz.

  • Grossman J.N. and Brearley A.J. (2005) The onset of metamorphism in ordinary and carbonaceous chondrites. Meteorit. Planet. Sci. 40, 87-122. (link)
Data from:
  Table 0
  Line 0:
Place of purchase:Ouarzazate
Date:P 2014 Jan
Mass (g):226
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):5.6-38.6
Ferrosilite (mol%):3.3-30.0
Wollastonite (mol%):0.2-2.1
Magnetic suscept.:4.75
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):25.4
Type spec location:UWB
Main mass:F. Kuntz
Comments:K204; 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)
Kuntz: Fabien Kuntz, France; Website (private address)
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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     This is 1 of 7912 approved meteorites from (Northwest Africa) (plus 1974 unapproved names)

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