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Northwest Africa 6949
Basic information Name: Northwest Africa 6949
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6949
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 418 g
Classification
  history:
Meteoritical Bulletin:  MB 100  (2012)  Winonaite
Recommended:  Winonaite    [explanation]

This is 1 of 35 approved meteorites classified as Winonaite.   [show all]
Search for other: Primitive achondrites, Winonaites
Comments: Approved 23 Apr 2012
Writeuphelp
Writeup from MB 100:

Northwest Africa 6949 (NWA 6949)

(Northwest Africa)

Purchased: Aug 2011

Classification: Primitive achondrite (Winonaite)

Petrography: Metamorphic texture with many 120° triple junctions and fairly abundant holly-leaf-shaped grains of metal (mostly taenite with some altered kamacite). Mafic silicate minerals are Mg-rich; heterogeneously distributed sodic plagioclase and chlorapatite.

Geochemistry: Olivine (Fa1.8-2.2, Fe/Mn=5-6), diopside (Fs1.1-2.1Wo45.9-43.8), enstatite (Fs1.5-5.5Wo1.2-1.4).

Data from:
  MB100
  Table 1
  Line 1550:
Place of purchase:Temara
Date:P Aug 2011
Mass (g):418
Pieces:1
Class:Winonaite
Shock stage:low
Weathering grade:low
Fayalite (mol%):1.8-2.2
Ferrosilite (mol%):1.1-2.1; 1.5-5.5
Wollastonite (mol%):1.2-1.4; 45.9-43.8
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.8
Type spec location:UWS
Main mass:D. Pitt
Comments: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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6877 approved meteorites from (Northwest Africa) (plus 2037 unapproved names)

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