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Northwest Africa 11065
Basic information Name: Northwest Africa 11065
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11065
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 76.9 g
Meteoritical Bulletin:  MB 106  (2018)  Martian (shergottite)
Recommended:  Martian (shergottite)    [explanation]

This is 1 of 284 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite).   [show all]
Search for other: Martian meteorites
Comments: Approved 3 Mar 2017
Writeup from MB 106:

Northwest Africa 11065 (NWA 11065)

(Northwest Africa)

Purchased: 2016 Sep

Classification: Martian meteorite (Shergottite)

History: Purportedly found in southern Morocco near Bir Anzarane, and purchased by Ben Hoefnagels in September 2016 from a dealer in Ouarzazate, Morocco.

Physical characteristics: A single broken stone (76.9 g) with shiny black fusion crust on all sides except for the weathered exposed interior side. The fresh interior exhibits larger pale greenish, prismatic grains and smaller pale yellowish-green grains with interstitial lath-like grains of glassy maskelynite.

Petrography: (A. Irving and S. Kuehner, UWS) Larger prismatic clinopyroxene oikocrysts (some consisting of multiple subgrains) enclose small chadacrysts of olivine and Ti-chromite. These are accompanied by smaller, stubby grains of pyroxene and olivine, plus ~12 vol.% interstitial maskelynite (as elongate lath-shaped grains intergrown with clinopyroxene) and accessory ilmenite, ulvöspinel, Mg-poor merrillite and pyrrhotite. Melt inclusions composed of glass or clinopyroxene+glass are present in some olivine grains, as well as rare inclusions of orthopyroxene.

Geochemistry: Olivine (Fa40.3-43.2, FeO/MnO = 46-50, N =4), pigeonite (Fs25.8-34.3Wo5.4-9.6, FeO/MnO = 26-28, N = 3), subcalcic augite (Fs18.9-20.9Wo35.0-29.6, FeO/MnO = 25-28, N = 3), orthopyroxene inclusion in olivine (Fs36.4Wo2.7, FeO/MnO = 34), maskelynite (An56.0-56.6Or1.3-1.2, N = 2).

Classification: Martian meteorite (shergottite, poikilitic).

Specimens: 17.93 g including one polished thin section at UWB; 0.3 g at CEREGE; remainder with Mr. B. Hoefnagels.

Data from:
  Table 0
  Line 0:
Place of purchase:Ouarzazate
Date:P 2016 Sep
Mass (g):76.9
Class:Martian (shergottite)
Shock stage:high
Weathering grade:low
Fayalite (mol%):40.3-43.2
Ferrosilite (mol%):25.8-34.3; 18.9-20.9
Wollastonite (mol%):5.4-9.6; 35.0-29.6
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):18.23
Type spec location:UWB/CEREGE
Main mass:B. Hoefnagels
Comments:BH035; submitted by A. Irving
   and collections
CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 29 Oct 2018)
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 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 8777 approved meteorites from (Northwest Africa) (plus 1879 unapproved names)

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