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Northwest Africa 7467
Basic information Name: Northwest Africa 7467
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7467
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass:help 108.7 g
Meteoritical Bulletin:  MB 102  (2013)  Diogenite-pm
Recommended:  Diogenite-pm    [explanation]

This is 1 of 50 approved meteorites classified as Diogenite-pm.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 30 Sep 2013
Writeup from MB 102:

Northwest Africa 7467 (NWA 7467)

(Northwest Africa)

Purchased: 2012 Jul

Classification: HED achondrite (Diogenite, polymict)

History: Purchased from a Moroccan dealer by Gary Fujihara in July 2012.

Petrography: (A. Irving and S. Kuehner, UWS) Fresh, complex polymict breccia composed of >90 vol.% crystal fragments derived from several types of diogenitic orthopyroxenes. Contains minor amounts of exsolved pigeonite, calcic plagioclase, magnesian and ferroan olivine, rare ferropigeonite, chromite, ilmenite, troilite and stained metal. There also are less abundant lithic clasts of basaltic to quench-textured eucrites and dark-matrix microbreccias, plus sparse, broken spherical grains of pinkish-tan glass.

Geochemistry: Diogenitic orthopyroxene (Fs20.2Wo0.6; Fs29.4Wo4.9; Fs34.4Wo2.7; FeO/MnO = 28-30), orthopyroxene (Fs51.1Wo4.6); FeO/MnO = 30), clinopyroxene (Fs24.8-27.9Wo40.5-39.0); FeO/MnO = 29), ferropigeonite (Fs76.1Wo13.8; FeO/MnO = 22), olivine (Fa18.3; FeO/MnO = 64), ferroan olivine (Fa59.8; FeO/MnO = 47).

Classification: Diogenite (polymict breccia).

Specimens: 21.4 g of sample and one polished thin section are on deposit at UWB. G. Fujihara holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2012 Jul
Mass (g):108.7
Shock stage:low
Weathering grade:low
Fayalite (mol%):18.3; 59.8
Ferrosilite (mol%):20.2; 29.4; 34.4; 51.1; 24.8-27.9; 76.1
Wollastonite (mol%):0.6; 4.9; 2.7; 4.6; 40.5-39.0; 13.8
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):21.4
Type spec location:UWB
Main mass:G. Fujihara
Comments:GF12-10; 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. 102, MAPS 50, 1662, September 2015
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Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Christophe PICQ   
Public domain photographs:
Gary Fujihara      

     This is 1 of 8138 approved meteorites from (Northwest Africa) (plus 1941 unapproved names)

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