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Northwest Africa 11377
Basic information Name: Northwest Africa 11377
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11377
Observed fall: No
Year found: 2017
Country: Mauritania
Mass:help 982 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  Aubrite
Recommended:  Aubrite    [explanation]

This is 1 of 66 approved meteorites classified as Aubrite.   [show all]
Search for other: Achondrites, Aubrites, Enstatite achondrites, and Enstatite-rich meteorites
Comments: Approved 26 Sep 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11377 (NWA 11377)

Mauritania

Find: 2017 May

Classification: Enstatite achondrite (Aubrite)

History: Purportedly found near Ouadane, Mauritania, in May 2017 and subsequently purchased by Habib Naji in Zouerat, Mauritania.

Physical characteristics: The single stone (982 g) is partly coated by black fusion crust, but the interior is white to pale gray in color with some small, stained black grains.

Petrography: (A. Irving and S. Kuehner, UWS) Cataclastic texture (mean grainsize 2.2 mm). Composed predominantly of anhedral grains of pure enstatite with accessory pure forsterite, pure diopside, alabandite (mostly Fe-free but some Fe-bearing), troilite, daubreelite, schreibersite, Si-poor kamacite and taenite.

Geochemistry: Enstatite (Fs0.0Wo0.1-0.3, N = 3), forsterite (Fa0.0), diopside (Fs0.0Wo44.6). Kamacite Si 0.04-0.05 wt.%, Ni 3.3-3.8 wt.%, Co 0.32-0.34 wt.% (N = 3).

Classification: Aubrite.

Specimens: 28.7 g including one polished mount at UWB; remainder with Mr. B. Hoefnagels.

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Zouerat, Mauritania
Date:2017 May
Mass (g):982
Pieces:1
Class:Aubrite
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):0.0
Wollastonite (mol%):0.1-0.3
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):28.7
Type spec location:UWB
Main mass:Ben Hoefnagels
Comments:Work name 313-A; submitted by A. Irving
Institutions
   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)
Catalogs:
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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Geography:

Mauritania
Coordinates:Unknown.

Statistics:
     This is 1 of 101 approved meteorites from Mauritania (plus 1 unapproved name) (plus 2 impact craters)

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