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Northwest Africa 10068
Basic information Name: Northwest Africa 10068
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10068
Observed fall: No
Year found: 2008
Country: (Northwest Africa)
Mass:help 616 g
Meteoritical Bulletin:  MB 104  (2015)  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 1 May 2015
Writeup from MB 104:

Northwest Africa 10068 (NWA 10068)

(Northwest Africa)

Purchased: 2008 Jan

Classification: Martian meteorite (Shergottite)

History: Purchased by Dr. David Gregory in January 2008 from a dealer at the Tucson Gem and Mineral Show.

Petrography: (A. Irving and S. Kuehner, UWS) Intersertal texture. Composed predominantly of complexly-zoned clinopyroxene and maskelynite with accessory Fe-Ti oxides, pyrrhotite, merrillite, alkali feldspar and alkalic glass. Crystallized melt inclusions rich in ulvöspinel are present within maskelynite.

Geochemistry: Low-Ca pyroxene (Fs36.4Wo10.9; Fs44.0-55.9Wo14.3-14.6; FeO/MnO = 32-38; N = 3), high-Ca pyroxene (Fs23.3-33.6Wo34.0-30.5; Fs49.7-54.8Wo21.8-21.2; FeO/MnO = 31-37; N = 4), plagioclase (An53.6-56.0Or0.8-1.2, N = 3).

Classification: Martian (intersertal shergottite). Paired with NWA 2975 and stones paired with it.

Specimens: A 1.8 g polished slice is at UWB; a total of 614.5 g in several pieces is at ROM.

Data from:
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2008 Jan
Mass (g):616.3
Class:Martian (shergottite)
Shock stage:high
Weathering grade:low
Fayalite (mol%):36.4-55.9; 23.3-54.8
Ferrosilite (mol%):10.9-14.6; 34.0-21.2
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):22
Type spec location:1.8 g UWB; 614.5 g ROM
Main mass:ROM
Comments:DG14-3; submitted by A. Irving
   and collections
ROM: Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario M5S 2C6, Canada (institutional address; updated 18 Oct 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)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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     This is 1 of 8636 approved meteorites from (Northwest Africa) (plus 1884 unapproved names)

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