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Northwest Africa 7967
Basic information Name: Northwest Africa 7967
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7967
Observed fall: No
Year found: 2006
Country: (Northwest Africa)
Mass:help 73.9 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  Eucrite-br
Recommended:  Eucrite-br    [explanation]

This is 1 of 218 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 10 Dec 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 7967 (NWA 7967)

(Northwest Africa)

Purchased: 2006 Feb

Classification: HED achondrite (Eucrite, brecciated)

History: Purchased by Mike Silver in February 2006 from a Moroccan dealer at the Tucson Gem and Mineral Show.

Petrography: (A. Irving and S. Kuehner, UWS) Matrix-poor breccia containing angular eucrite clasts with variable textures (subophitic, intersertal, variolitic). Minerals are calcic plagioclase, finely-exsolved pigeonite, silica polymorph, ilmenite, Ti-chromite, troilite and stained Ni-free metal.

Geochemistry: Orthopyroxene (Fs63.3-64.0Wo4.1-4.7, FeO/MnO = 28-30, N = 3), clinopyroxene (Fs31.8-32.2Wo41.0-39.8, FeO/MnO = 30-33, N = 3).

Classification: Eucrite (breccia).

Specimens: 17.9 g including one polished thin section at ROM; remainder with Mr. M. Silver.

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2006 Feb
Mass (g):73.87
Pieces:5
Class:Eucrite-br
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):63.3-64.0; 31.8-32.2
Wollastonite (mol%):4.1-4.7; 41.0-39.8
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):17.9
Type spec location:ROM
Main mass:M. Silver
Comments:MS2; submitted by A. Irving
Institutions
   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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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