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Northwest Africa 5549
Basic information Name: Northwest Africa 5549
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 5549
Observed fall: No
Year found: 2008
Country: (Northwest Africa)
Mass:help 12 kg
Classification
  history:
Meteoritical Bulletin:  MB 99  (2011)  Iron, IAB-MG
Recommended:  Iron, IAB-MG    [explanation]

This is 1 of 127 approved meteorites classified as Iron, IAB-MG.   [show all]
Search for other: IAB complex irons, Iron meteorites, and Metal-rich meteorites
Comments: Approved 21 Sep 2010
Writeuphelp
Writeup from MB 99:

Northwest Africa 5549 (NWA 5549)

(Northwest Africa)

Found: unknown

Classification: Iron meteorite (IAB-MG)

Petrography: UCLA samples from two masses; in these and in web photos, silicates are common. We examined two sides of a slice with total area 25 cm2. Silicate abundance ~15 vol%, troilite ~1.5 vol%. Kamacite lengths only ~1.5x widths, making width determination uncertain; best estimate 1.6±0.3 mm. Neumann lines abundant. Some silicates contain abundant small metal grains. A few large (3x4 mm) kamacite lamellae with incompletely resorbed taenite.

Geochemistry: Co (mg/g) 4.55, Ni (mg/g) 68.8, Ga (µg/g) 81.6, Ge (µg/g) 370, As (µg/g) 4.1, Ir (µg/g) 4.1, Au (µg/g) 1.49.

Submitter: J. T. Wasson, UCLA.

Data from:
  MB99
  Table 0
  Line 0:
Place of purchase:Tucson
Date:unknown
Mass (g):>12000
Pieces:1
Class:Iron, IAB-MG
Classifier:Wasson
Type spec mass (g):297
Type spec location:UCLA
Main mass:Pitt, Schrader
Comments:Submitted by Wasson
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)
Catalogs:
References: Published in Meteoritical Bulletin, No. 99, April 2012, MAPS 47, E1-E52 (2012) [published online only]
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
aranemac   
DCOM      
Dott. Geol. Alberto Giusta   
Gregor H.   
John Lutzon      
Mirko Graul            
Mohammed HMANI   
Woreczko Jan & Wadi      
Geography: 
Coordinates:Unknown.

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

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