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Northwest Africa 10505
Basic information Name: Northwest Africa 10505
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10505
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 850 g
Meteoritical Bulletin:  MB 105  (2016)  Diogenite
Recommended:  Diogenite    [explanation]

This is 1 of 436 approved meteorites classified as Diogenite.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 3 Feb 2016
Writeup from MB 105:

Northwest Africa 10505 (NWA 10505)

(Northwest Africa)

Purchased: 2015 Sep

Classification: HED achondrite (Diogenite)

History: Purchased by Marcin Cimala in September 2015 from a dealer in Ouarzazate, Morocco.

Petrography: (A. Irving, UWS) Protogranular aggregate of predominantly orthopyroxene with ~5 vol.% olivine, accessory chromite, kamacite and troilite, plus rare calcic plagioclase. Cataclastic textures are absent. Secondary calcite occurs in small patches and along grain boundaries.

Geochemistry: (P. Carpenter, WUSL) Orthopyroxene (Fs24.7-24.8Wo3.7-3.8, FeO/MnO = 29-30, N = 3), olivine (Fa29.7-29.9, FeO/MnO = 48-50, N = 2).

Classification: Diogenite (protogranular, olivine-bearing).

Specimens: 26 g including one polished thin section and one polished thick section at PSF; remainder with Mr. M. Cimala.

Data from:
  Table 0
  Line 0:
Place of purchase:Ouarzazate
Date:P 2015 Sep
Mass (g):850
Shock stage:low
Weathering grade:moderate
Fayalite (mol%):29.7-29.9
Ferrosilite (mol%):24.7-24.8
Wollastonite (mol%):3.7-3.8
Classifier:A. Irving and P. Carpenter, UWS
Type spec mass (g):26
Type spec location:PSF
Main mass:M. Cimala
Comments:MC 135; submitted by A. Irving
   and collections
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
References: Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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     This is 1 of 7181 approved meteorites from (Northwest Africa) (plus 2002 unapproved names)

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