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Northwest Africa 4220
Basic information Name: Northwest Africa 4220
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4220
Observed fall: No
Year found: 2004
Country: (Northwest Africa)
Mass:help 18.2 kg
Classification
  history:
Meteoritical Bulletin:  MB 91  (2007)  H4
Recommended:  H4    [explanation]

This is 1 of 6033 approved meteorites (plus 11 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 1 Sep 2006
Data from:
  MB91
  Table 2
  Line 233:
Place of purchase:St. Marie aux Mine, France
Date:2004
Mass (g):18,200
Pieces:1
Class:H4
Shock stage:S1
Weathering grade:W3
Fayalite (mol%):18
Ferrosilite (mol%):16.8
Classifier:F. Brandst├Ątter, NHMV
Type spec mass (g):167
Type spec location:NHMV
Main mass:anonymous
Institutions
   and collections
NHMV: Naturhistorisches Museum, Burgring 7, 1010 Wien, Austria, Austria; Website (institutional address; updated 18 Jan 2019)
Catalogs:
References: Published in Meteoritical Bulletin, no. 91, MAPS 42, 413-466 (2007)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

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