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Northwest Africa 6866
Basic information Name: Northwest Africa 6866
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6866
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 966 g
Meteoritical Bulletin:  MB 102  (2013)  H3.8
Recommended:  H3.8    [explanation]

This is 1 of 78 approved meteorites classified as H3.8.   [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 6 Sep 2013
Writeup from MB 102:

Northwest Africa 6866 (NWA 6866)

Northwest Africa

Purchased: 2011 Mar

Classification: Ordinary chondrite (H3.8)

Petrography: (A. Irving and S. Kuehner, UWS) Well-formed small (to 0.5 mm) POP, BO and RP chondrules in a finer matrix containing fairly abundant stained metal. Minerals are olivine, orthopyroxene, subcalcic augite, sodic plagioclase, troilite and altered kamacite.

Geochemistry: Olivine (Fa11.5-22.1; Cr2O3 in ferroan olivine <0.02 wt.%), orthopyroxene (Fs7.1-19.5Wo0.5-1.7), subcalcic augite (Fs14.9-17.0Wo29.7-31.1). Selection of olivines for analysis guided by BSE imagery.

Classification: Ordinary chondrite (H3.8). Subtype estimated to be 3.8 based on undetectable Cr2O3 in ferroan olivine, fine-grained matrix, and relatively narrow range in Fa.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2011 Mar
Mass (g):966
Shock stage:S1
Weathering grade:W2
Fayalite (mol%):11.5-22.1, n=3
Ferrosilite (mol%):7.1-19.5
Wollastonite (mol%):0.5-1.7
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20
Type spec location:UWB
Main mass:G. Hupe
Comments:GH-403; 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)
Hupe: (old address—now see GHupé or AHupé) G. and A. Hupe, 2616 Lake Youngs Court SE, Renton, WA 98058., United States (private address)
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
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     This is 1 of 8495 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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