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Northwest Africa 6421
Basic information Name: Northwest Africa 6421
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6421
Observed fall: No
Year found: 2010
Country: (Northwest Africa)
Mass:help 88 g
Classification
  history:
Meteoritical Bulletin:  MB 100  (2012)  Diogenite
Recommended:  Diogenite    [explanation]

This is 1 of 443 approved meteorites classified as Diogenite.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 24 Oct 2011
Writeuphelp
Writeup from MB 100:

Northwest Africa 6421 (NWA 6421)

(Northwest Africa)

Purchased: 2010 Sep

Classification: HED achondrite (Diogenite)

Petrography: Five black fusion crusted stones. Monomict breccia composed mainly of randomly oriented single grains of orthopyroxene (containing chromite inclusions) plus sparse polycrystalline diogenite clasts in a coarse grained matrix of orthopyroxene, chromite, troilite and rare olivine and fresh metal.

Data from:
  MB100
  Table 1
  Line 1373:
Place of purchase:Erfoud
Date:P 2010 Sep
Mass (g):88
Pieces:5
Class:Diogenite
Weathering grade:low
Fayalite (mol%):31.9
Ferrosilite (mol%):25.4-26.6
Wollastonite (mol%):3.3
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):17.6
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)
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Auricular   
bphd   
Dirk Hohmann   
Gregor H.   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7385 approved meteorites from (Northwest Africa) (plus 1955 unapproved names)

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