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Northwest Africa 8031
Basic information Name: Northwest Africa 8031
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8031
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass:help 380 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  L3.9
Recommended:  L3.9    [explanation]

This is 1 of 29 approved meteorites classified as L3.9.   [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 8031 (NWA 8031)

(Northwest Africa)

Purchased: 2012

Classification: Ordinary chondrite (L3.9)

History: Purchased by Terry Boswell in 2012 from a dealer in Midelt, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Abundant well-formed, medium-sized (0.3-2.3 mm) chondrules and moderately abundant altered metal. Olivine, orthopyroxene, clinopyroxene, sodic plagioclase, chromite, altered kamacite and troilite.

Geochemistry: Olivine (Fa24.2-25.5, N = 7), orthopyroxene (Fs2.7-21.5Wo0.3-1.7, N = 4), clinopyroxene (Fs8.5-8.3.3-43.8).

Classification: Ordinary chondrite (L3.9). Although the olivine in this specimen is fairly well equilibrated, the orthopyroxenes are not.

Specimens: 22.5 g and one polished thin section are at UWB. The remainder is held by Mr. T. Boswell.

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Midelt
Date:P 2012
Mass (g):380
Pieces:1
Class:L3.9
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):24.2-25.5 (n = 7)
Ferrosilite (mol%):2.7-21.5
Wollastonite (mol%):0.3-1.7
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):22.5
Type spec location:UWB
Main mass:T. Boswell
Comments:TB13-11; 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)
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 6900 approved meteorites from (Northwest Africa) (plus 2035 unapproved names)

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