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Northwest Africa 2428
Basic information Name: Northwest Africa 2428
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 2428
Observed fall: No
Year found: 2004
Country: (Northwest Africa)
Mass:help 1650 g
Classification
  history:
Meteoritical Bulletin:  MB 89  (2005)  IAB subclass HL
MetBase:  v. 7.1  (2006)  IAB-sHL
Recommended:  Iron, IAB-sHL    [explanation]

This is 1 of 19 approved meteorites classified as Iron, IAB-sHL.   [show all]
Search for other: IAB complex irons, Iron meteorites, and Metal-rich meteorites
Writeuphelp
Writeup from MB 89:

Northwest Africa 2428

Northwest Africa

Found 2004

Iron (IAB)

A single mass with a total weight of 1650 grams was purchased in Erfoud, Morocco in July, 2004. Description and classification (John Wasson, UCLA): NWA 2428 is a plessitic octahedrite that has suffered some postshock recrystallization. It is dominated by long (~2 cm) schreibersite lamellae that are surrounded by swathing kamacite ~ 0.6 mm thick. Shock has caused fractures near most of the schreibersite lamellae. Weathering is minor. Cr 22 ug/g, Co 5.58 mg/g, Ni 117.7 mg/g, Cu 200 ug/g, Ga 16.8 ug/g, As 28.3 ug/g, Sb 180 ng/g, W 0.17 ug/g, Ir 1.09 ug/g, Au 2.646 ug/g.  Based on this data the meteorite can be classified as a IAB, subclass HL, iron. Specimens: type specimen, 55 g UCLA, main mass, Birdsell.

Data from:
  MB89
  Table 7
  Line 242:
Place of purchase:Erfoud
Date:2004
Mass (g):1650
Pieces:1
Class:Iron, IAB subclass HL
Classifier:J. T. Wasson, UCLA
Type spec mass (g):55
Main mass:Birdsell
Institutions
   and collections
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
Birdsell: Arizona Skies Meteorites, P.O. Box 2412, Flagstaff, AZ 86003, United States; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 89, MAPS 40, A201-A263 (2005)
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Don Edwards   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
AJS Cosmic Treasures      
Mirko Graul   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6781 approved meteorites from (Northwest Africa) (plus 2047 unapproved names)

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