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Northwest Africa 7313
Basic information Name: Northwest Africa 7313
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7313
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass:help 777 g
Classification
  history:
Meteoritical Bulletin:  MB 101  (2012)  LL6
Recommended:  LL6    [explanation]

This is 1 of 2740 approved meteorites (plus 1 unapproved name) classified as LL6.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 28 Sep 2012
Writeuphelp
Writeup from MB 101:

Northwest Africa 7313 (NWA 7313)

(Northwest Africa)

Purchased: 2012 Feb

Classification: Ordinary chondrite (LL6)

History: Purchased by F. Kuntz in February 2012 from a dealer in Erfoud, Morocco.

Petrography: Coarse breccia composed predominantly of recrystallized clasts containing some remnants of large chondrules. A large, rounded, finer grained clast is completely recrystallized with triple grain junctions, and contains olivine and orthopyroxene of very similar composition to the respective minerals in the chondrule-bearing clasts.

Geochemistry: Olivine (Fa30.2±0.10), orthopyroxene (Fs24.1-24.2Wo1.9-2.4), clinopyroxene (Fs9.6-9.8Wo43.3-43.0). Recrystallized clast contains olivine (Fa30.0-30.7) and orthopyroxene (Fs23.7-24.5Wo1.0-1.6).

Classification: Ordinary chondrite (LL6).

Data from:
  MB101
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2012 Feb
Mass (g):777
Pieces:3
Class:LL6
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):30.2±0.10
Ferrosilite (mol%):24.1-24.2
Wollastonite (mol%):1.9-2.4
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):32.5
Type spec location:UWB
Main mass:F. Kuntz
Comments:K184; 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)
Kuntz: Fabien Kuntz, France; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 101, MAPS 50, 1661, September 2015
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
John Lutzon   
Michael S. Scherman   
Nuno Chaves      
The Wilcox Collection of Meteorites   
xeqtr   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6759 approved meteorites from (Northwest Africa) (plus 2047 unapproved names)

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