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Northwest Africa 7936
Basic information Name: Northwest Africa 7936
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7936
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass:help 1300 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  L3
Recommended:  L3    [explanation]

This is 1 of 652 approved meteorites classified as L3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 30 Dec 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7936 (NWA 7936)

(Northwest Africa)

Purchased: 2012

Classification: Ordinary chondrite (L3)

History: Purchased by Ali and Mohammed Hmani in 2012 from a dealer in Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Medium to large (0.4-2.3 mm), well-formed chondrules. Olivine, orthopyroxene, pigeonite, augite, sodic plagioclase, chromite, stained kamacite and troilite.

Geochemistry: Olivine (Fa1.4-76.8; Cr2O3 in ferroan examples is 0.06-0.83 wt.%, mean 0.23±0.22 wt.%, N = 14), orthopyroxene (Fs1.0-43.8Wo0.9-2.8), pigeonite (Fs18.2Wo22.1), augite (Fs8.5Wo41.9).

Classification: Ordinary chondrite (L3.15). Estimation of subtype based Cr2O3 distribution in ferroan olivine per Fig. 15a of Grossman and Brearley (2005).

Specimens: 20.1 g and one polished thin section are at UWB. The remainder is held by Hmani.

Bibliography:
  • 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:
  MB102
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2012
Mass (g):1300
Pieces:2
Class:L3
Shock stage:S2
Weathering grade:W1/2
Fayalite (mol%):1.4-76.8 (n = 16)
Ferrosilite (mol%):1.0-43.8
Wollastonite (mol%):0.9-2.8
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.1
Type spec location:UWB
Main mass:Hmani Inc.
Comments:OT06; 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)
Hmani: A. Hmani Moroccan Imports, 13 rue Jules Hardouin Mansart, 92600 Asnières, France (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6628 approved meteorites from (Northwest Africa) (plus 2037 unapproved names)

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