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Northwest Africa 4431
Basic information Name: Northwest Africa 4431
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4431
Observed fall: No
Year found: 2005
Country: Algeria
Mass:help 450 g
Classification
  history:
Recommended:  L5    [explanation]

This is 1 of 8487 approved meteorites (plus 4 unapproved names) classified as L5.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 28 Sep 2007
Data from:
  MB93
  Table 2
  Line 49:
Place of purchase:Algeria, purchased in Morocco
Date:2005
Mass (g):450
Pieces:Many
Class:L5
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):23.4
Ferrosilite (mol%):20.4
Classifier:T. Bunch, NAU
Type spec mass (g):21.7
Type spec location:PSF
Main mass:Cimala
Institutions
   and collections
NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 93, MAPS 43, 571-632 (2008)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Polandmet   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Franco Vignato Photo added 20 Oct 2022
Gerald Armstrong Photo added 20 Oct 2022
Piotr gural100 Photo added 20 Oct 2022
Robert Zdancewicz Photo added 20 Oct 2022
Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 1232 approved meteorites from Algeria (plus 29 unapproved names) (plus 4 impact craters)

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