MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 19 Jun 2024
Search for: Search type: Search limits: Display: Publication:
Text help
Starts with
Sounds like
Falls  Non-NWAs
What's new
  in the last:
Limit to approved meteorite names
Search text:  
Northwest Africa 7464
Basic information Name: Northwest Africa 7464
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7464
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass:help 2.26 kg
Meteoritical Bulletin:  MB 102  (2013)  Diogenite
Recommended:  Diogenite    [explanation]

This is 1 of 522 approved meteorites (plus 2 unapproved names) classified as Diogenite.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 3 Jun 2013
Writeup from MB 102:

Northwest Africa 7464 (NWA 7464)

(Northwest Africa)

Purchased: 2012 Jul

Classification: HED achondrite (Diogenite)

History: Purchased from a Moroccan dealer by Gary Fujihara, Tomek Jakubowski and Adam Bates in July 2012.

Physical characteristics: Among the various stones constituting this find, most are extremely fresh, but some have iron oxide staining (presumably as a result of variable distribution and degree of weathering of accessory iron metal).

Petrography: (A. Irving and S. Kuehner, UWS) Texturally, the material consists of larger crystal fragments in a matrix of finer, angular grains of the same minerals – this could be termed a matrix-poor breccia, cataclastic or mortar texture. The predominant mineral is orthopyroxene accompanied by accessory olivine, clinopyroxene, anorthite, chromite, Ni-poor metal (more stained in some stones) and troilite.

Geochemistry: Orthopyroxene (Fs24.7-25.5Wo3.7-3.4; FeO/MnO = 27-31), olivine (Fa25.1; Fa28.3; FeO/MnO = 48-50), clinopyroxene (Fs10.4Wo43.4; FeO/MnO = 22).

Classification: Diogenite

Specimens: 28.3 g of sample and one polished thin section are on deposit at UWB. The remaining material is held jointly by Gary Fujihara, Tomasz Jakubowski and Adam Bates.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2012 Jul
Mass (g):2263
Shock stage:moderate
Weathering grade:low
Fayalite (mol%):25.1-28.3
Ferrosilite (mol%):24.7-25.5; 10.4
Wollastonite (mol%):3.7-3.4; 43.4
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):28.3
Type spec location:UWB
Main mass:G. Fujihara, T. Jakubowski, A. Bates
Comments:GF12-7; 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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
Find references in NASA ADS:
Find references in Google Scholar:
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Denis gourgues   
Jean-Michel Masson   
Volker Heinrich   
Public domain photographs:
Gary Fujihara   

     This is 1 of 9776 approved meteorites from (Northwest Africa) (plus 1862 unapproved names)

Direct link to this page