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Northwest Africa 11494
Basic information Name: Northwest Africa 11494
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11494
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 25 g
Meteoritical Bulletin:  MB 106  (2018)  Lodranite
Recommended:  Lodranite    [explanation]

This is 1 of 89 approved meteorites classified as Lodranite.   [show all]
Search for other: Acapulcoite-lodranite family, Lodranites, and Primitive achondrites
Comments: Approved 28 Nov 2017
Writeup from MB 106:

Northwest Africa 11494 (NWA 11494)

(Northwest Africa)

Purchased: 2017 Aug

Classification: Primitive achondrite (Lodranite)

History: Purchased by Adam Aaronson in Temara, Morocco in August 2017.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Protogranular texture. The mineralogy is dominated by orthopyroxene with accessory chromite, clinopyroxene, olivine, merrillite, kamacite and pentlandite. Olivine present as inclusions within orthopyroxene is more ferroan than olivine associated with chromite grains.

Geochemistry: Orthopyroxene (Fs14.0-14.3Wo2.2-2.5, FeO/MnO = 17-19, N = 2), clinopyroxene (Fs6.3-6.5Wo43.2-42.3, FeO/MnO = 11-16, N = 2), olivine associated with orthopyroxene Fa16.1-16.4, N = 2), olivine associated with chromite (Fa11.4-12.8; FeO/MnO = 25-30, N = 2).

Classification: Lodranite (orthopyroxene-rich).

Specimens: 5.0 g in the form of a polished endcut at UWB; remainder with Aaronson.

Data from:
  Table 0
  Line 0:
Place of purchase:Temara
Date:P 2017 Aug
Mass (g):25
Shock stage:low
Weathering grade:low
Fayalite (mol%):11.4-12.8; 16.1-16.4
Ferrosilite (mol%):14.0-14.3
Wollastonite (mol%):2.2-2.5
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):5.0
Type spec location:UWB
Main mass:A. Aaronson
Comments:Work name M2045; 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)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
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 Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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     This is 1 of 8745 approved meteorites from (Northwest Africa) (plus 1880 unapproved names)

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