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Northwest Africa 6929
Basic information Name: Northwest Africa 6929
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6929
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 165 g
Classification
  history:
Meteoritical Bulletin:  MB 100  (2012)  H4
Recommended:  H4    [explanation]

This is 1 of 6038 approved meteorites (plus 2 unapproved names) classified as H4.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 6 Oct 2011
Writeuphelp
Writeup from MB 100:

Northwest Africa 6929 (NWA 6929)

Northwest Africa

Purchased: 2011 Mar

Classification: Ordinary chondrite (H4)

Petrography: Mostly small, well-formed and fairly closely packed chondrules in a stained metal-rich matrix. Minerals include olivine, orthopyroxene, subcalcic augite, augite, altered kamacite (with minor associated barite), chromite, merrillite and troilite. Isolated grains identified in the matrix are aluminous enstatite (Fs0.8Wo4.0; Al2O3 1.1 wt.%, FeO/MnO = 8.2) and a single 0.4 mm, rounded grain of pink Cr-pleonaste spinel.

Geochemistry: Olivine Fa17.2, orthopyroxene Fs14.2-14.4Wo0.5, subcalcic augite Fs8.1Wo35.3, augite Fs8.8Wo44.1, aluminous enstatite Fs0.8Wo4.0; Al2O3 1.1 wt.%, FeO/MnO = 8.2.

Data from:
  MB100
  Table 1
  Line 1545:
Place of purchase:Morocco
Date:P 2011 Mar
Mass (g):165
Pieces:4
Class:H4
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):17.2
Ferrosilite (mol%):14.2-14.4
Wollastonite (mol%):0.5
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):21
Type spec location:UWS
Main mass:G. Fujihara
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 7912 approved meteorites from (Northwest Africa) (plus 1974 unapproved names)

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