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Northwest Africa 10178
Basic information Name: Northwest Africa 10178
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10178
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 1279 g
Meteoritical Bulletin:  MB 104  (2015)  Lunar
Recommended:  Lunar    [explanation]

This is 1 of 102 approved meteorites classified as Lunar.   [show all]
Search for other: Lunar meteorites
Comments: Approved 30 Jun 2015
Writeup from MB 104:

Northwest Africa 10178 (NWA 10178)

(Northwest Africa)

Purchased: 2015

Classification: Lunar meteorite

History: Purchased by Darryl Pitt in February, March and May 2015 from Moroccan dealers. .

Physical characteristics: Three similar, very fine grained, brittle stones (556.3 g, 310 g, 413 g) containing larger grains of maskelynite, and with cross-cutting, anastomozing veinlets of green glass.

Petrography: (A. Irving and S. Kuehner, UWS) Very fine-grained breccia composed of abundant anorthite (converted to maskelynite), olivine, orthopyroxene and pigeonite with accessory chromite and troilite.

Geochemistry: Olivine (Fa22.7-23.0, FeO/MnO = 87-91, N = 3), orthopyroxene (Fs18.7-18.8Wo2.9-3.2, FeO/MnO = 47-61, N = 2), maskelynite (An95.9-97.4Or0, N = 2).

Classification: Lunar (troctolitic granulitic breccia). Paired with NWA 5744 and others based on distinctive textural and mineralogical similarities.

Specimens: 40.4 g including one polished endcut at UWB. The remainder is held by DPitt.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2015
Mass (g):1279.3
Shock stage:high
Weathering grade:low
Fayalite (mol%):22.7-23.0
Ferrosilite (mol%):18.7-18.8
Wollastonite (mol%):3.2-2.9
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):40.4
Type spec location:UWB
Main mass:D. Pitt
Comments:MAC 120, MAC 131; 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 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 9116 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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