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Northwest Africa 6930
Basic information Name: Northwest Africa 6930
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6930
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 151 g
Classification
  history:
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
Writeuphelp
Writeup from MB 102:

Northwest Africa 6930 (NWA 6930)

Northwest Africa

Purchased: 2011 Jun

Classification: Ordinary chondrite (H3.8)

Petrography: (A. Irving and S. Kuehner, UWS) Small (to 0.5 mm), well-formed chondrules and fairly abundant slightly stained metal. Matrix is unrecrystalllized and fine-grained. Minerals are olivine, orthopyroxene, subcalcic augite, augite, sodic plagioclase, kamacite, chromite, merrillite and troilite.

Geochemistry: Olivine (Fa15.3-28.2; Cr2O3 in ferroan olivine <0.02 wt.%), orthopyroxene (Fs1.9Wo0.7; Fs16.4Wo1.2), subcalcic augite (Fs13.5Wo31.1), augite (Fs4.1Wo42.4).

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

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Zagora
Date:P 2011 Jun
Mass (g):151
Pieces:1
Class:H3.8
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):15.3-28.2, n=3
Ferrosilite (mol%):16.4
Wollastonite (mol%):1.2
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.7
Type spec location:UWB
Main mass:G. Fujihara
Comments:GF11-9; 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)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Chris Spratt   
Geography: 
Coordinates:Unknown.

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

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