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Northwest Africa 11078
Basic information Name: Northwest Africa 11078
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11078
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 380 g
Meteoritical Bulletin:  MB 106  (2018)  Enst achon
Recommended:  Enst achon    [explanation]

This is 1 of 11 approved meteorites classified as Enst achon.   [show all]
Search for other: Achondrites, Enstatite achondrites, and Enstatite-rich meteorites
Comments: Approved 10 Apr 2017
Writeup from MB 106:

Northwest Africa 11078 (NWA 11078)

(Northwest Africa)

Purchased: 2016 Nov

Classification: Enstatite achondrite

History: Purchased by Darryl Pitt in November 2016 from a dealer in Mauritania.

Petrography: (A. Irving and S. Kuehner, UWS) Recrystallized, relatively metal-rich assemblage of predominantly enstatite with accessory kamacite, forsterite, diopside, albitic plagioclase, troilite, daubreelite, alabandite and schreibersite. No chondrules were observed in the studied thin section.

Geochemistry: Enstatite (Fs0.3-0.4Wo0.6-0.5, N = 3), forsterite (Fa0.2-0.4, N = 2), diopside (Fs0.2-0.3Wo46.9-47.4, N = 2), albitic plagioclase Ab83.3An12.0Or4.7, kamacite (Si 0.01 wt.%, Ni 4.0-4.2 wt.%, Co0.42-0.43 wt.%, N = 2). Magnetic susceptibility log χ (× 10-9 m3/kg) = 5.66

Classification: Enstatite achondrite.

Specimens: 21 g including one polished thin section at UWB; remainder with DPitt.

Data from:
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P 2016 Nov
Mass (g):379.5
Class:Enst achon
Shock stage:S2
Weathering grade:minimal
Fayalite (mol%):0.2-0.4
Ferrosilite (mol%):0.3-0.4
Wollastonite (mol%):0.6-0.5
Magnetic suscept.:5.66
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):21
Type spec location:UWB
Main mass:DPitt
Comments:MVCH 226; 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)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address)
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 9013 approved meteorites from (Northwest Africa) (plus 1869 unapproved names)

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