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Northwest Africa 6699
Basic information Name: Northwest Africa 6699
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6699
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 17.4 g
Meteoritical Bulletin:  MB 103  (2014)  L-melt rock
Recommended:  L-melt rock    [explanation]

This is 1 of 43 approved meteorites classified as L-melt rock.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 3 Dec 2014
Writeup from MB 103:

Northwest Africa 6699 (NWA 6699)

(Northwest Africa)

Purchased: 2011 Jan

Classification: Ordinary chondrite (L, melt rock)

Petrography: Very fine grained with some relict chondrule remnants and dispersed larger, irregular grains of stained metal. Olivine, orthopyroxene, subcalcic augite, sodic plagioclase, kamacite and troilite.

Geochemistry: Olivine Fa23.5-25.6, orthopyroxene Fs17.9-18.7Wo1.8-2.8, subcalcic augite Fs14.3-14.7Wo31.6-29.6.

Classification: Ordinary chondrite, L melt rock. Both olivine and orthopyroxene can show some compositional variation, which may be inherited from the precursor chondritic protolith and not homogenized during the brief duration of the shock melting process.

Data from:
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2011 Jan
Mass (g):17.4
Class:L-melt rock
Shock stage:S6
Weathering grade:W1
Fayalite (mol%):23.5-25.6
Ferrosilite (mol%):17.9-18.7
Wollastonite (mol%):1.8-2.8
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):3.5
Type spec location:UWB
Main mass:GHupé
Comments:GH-387; 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)
GHupé: Gregory M. Hupé, 9003 Placid Lakes Blvd., Lake Placid, FL 33852, United States; Website (private address)
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Dominik Stoeckli   

     This is 1 of 8025 approved meteorites from (Northwest Africa) (plus 1951 unapproved names)

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