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Northwest Africa 6420
Basic information Name: Northwest Africa 6420
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6420
Observed fall: No
Year found: 2010
Country: (Northwest Africa)
Mass:help 371 g
Classification
  history:
Meteoritical Bulletin:  MB 100  (2012)  Howardite
Recommended:  Howardite    [explanation]

This is 1 of 451 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Comments: Approved 24 Oct 2011
Writeuphelp
Writeup from MB 100:

Northwest Africa 6420 (NWA 6420)

(Northwest Africa)

Purchased: 2010 Sep

Classification: HED achondrite (Howardite)

Petrography: Fresh specimen (with only slight iron oxide staining from weathering of rare metal) composed mainly of diogenitic debris with minor (>10 volume %) eucritic debris (from both cumulate and basaltic eucrite lithologies)

Data from:
  MB100
  Table 1
  Line 1372:
Place of purchase:Erfoud
Date:P 2010 Sep
Mass (g):371
Pieces:1
Class:Howardite
Weathering grade:low
Ferrosilite (mol%):26.1; 39.8; 17.7-19.2
Wollastonite (mol%):4.1; 2.9; 42.7-41.8
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):21.8
Type spec location:UWS
Main mass:B. Booz
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)
Beat Booz         
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names)
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Revision
  history:
  This lists important revisions made to data for this record.

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