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Northwest Africa 7952
Basic information Name: Northwest Africa 7952
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7952
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 110 g
Meteoritical Bulletin:  MB 102  (2013)  Diogenite-pm
Recommended:  Diogenite-pm    [explanation]

This is 1 of 49 approved meteorites classified as Diogenite-pm.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 14 Nov 2013
Writeup from MB 102:

Northwest Africa 7952 (NWA 7952)

(Northwest Africa)

Purchased: 2013 May

Classification: HED achondrite (Diogenite, polymict)

History: Purchased in Temara, Morocco by Adam Aaronson in December 2012.

Petrography: (A. Irving and S. Kuehner, UWS) Fairly fresh complex, clast-rich breccia composed predominantly (>90 vol.%) of angular grains of orthopyroxene with accessory olivine, pigeonite, more ferroan orthopyroxene, augite, calcic plagioclase, silica polymorph, Ti-chromite, ilmenite, stained metal and troilite.

Geochemistry: Orthopyroxene (Fs23.7-24.0Wo2.5-2.6; FeO/MnO = 27-31), ferroan orthopyroxene (Fs48.3Wo1.5; FeO/MnO = 35), olivine (Fa33.2-33.5; FeO/MnO = 50-53), pigeonite (Fs55.9Wo21.7; FeO/MnO = 30), augite (Fs49.6Wo39.6; FeO/MnO = 35).

Classification: Diogenite (polymict breccia). Composed predominantly of diogenitic material with minor admixture of eucritic debris.

Specimens: 20.1 g of material and one polished thin section are at UWB. The remaining material is held by Aaronson.

Data from:
  Table 0
  Line 0:
Place of purchase:Temara
Date:P 2013 May
Mass (g):110
Shock stage:low
Weathering grade:low
Fayalite (mol%):33.2-33.5
Ferrosilite (mol%):23.7-24.0
Wollastonite (mol%):2.5-2.6
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.1
Type spec location:UWB
Main mass:A. Aaronson
Comments:M1567; 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)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
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     This is 1 of 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

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