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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 120 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)
Alberto Giusta   
aranemac   
DCOM      
Gregor H.   
John Lutzon      
Mirko Graul            
Mohammed HMANI   
Woreczko Jan & Wadi      
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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