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Northwest Africa 4229
Basic information Name: Northwest Africa 4229
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4229
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass:help 439 g
Classification
  history:
Meteoritical Bulletin:  MB 92  (2007)  H7
Recommended:  H7    [explanation]

This is 1 of 32 approved meteorites classified as H7.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 24 Jul 2007
Revised 31 May 2019: Corrected O isotopes
Writeuphelp
Writeup from MB 108:
NWA 4229, correction

The oxygen isotopes in MB92 were incorrect. The actual values are:  δ18O = 4.29, 4.52; δ17O = 2.95, 3.11; Δ17O = 0.693, 0.732 (all ‰)
Data from:
  MB92
  Table 2
  Line 15:
Place of purchase:Tagounite, Morocco
Date:Dec-2005
Mass (g):439
Pieces:1
Class:H7
Fayalite (mol%):18.4-18.7
Ferrosilite (mol%):16.4
Wollastonite (mol%):3.1-4.2
Classifier:A. Irving, UWS
Type spec mass (g):20.3
Type spec location:UWS
Main mass:GHupé
Comments:δ18O = 2.95, 3.11; δ17O = 4.29, 4.52; Δ17O = 0.693, 0.732 (all ‰)
Plots: O isotopes:  
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)
GHupé: Gregory M. Hupé, 9003 Placid Lakes Blvd., Lake Placid, FL 33852, United States; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 92, MAPS 42, 1647-1694 (2007)
Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Michael Cottingham      
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Christophe PICQ   
David Hardy   
Solar Anamnesis      
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9921 approved meteorites from (Northwest Africa) (plus 1838 unapproved names)

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