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nz Iron Meteorite 2

  • No reserve No reserve 
  • Closed: Fri 24 Aug 2012, 10:58 am
Listing #: 504720400
Most people have never held a space rock in their hands and when someone does pick up an iron meteorite for the first time their faces light up and their reaction is, almost without fail, to exclaim: "Wow, it's so heavy!"

Iron meteorites were once part of the core of a long-vanished planet or large asteroid and are believed to have originated within the Asteroid Belt between Mars and Jupiter. They are among the densest materials on earth and will stick very strongly to a powerful magnet. Iron meteorites are far heavier than most earth rocks-if you've ever lifted up a cannon ball or a slab or iron or steel, you'll get the idea.

In most specimens of this group, the iron content is approximately 90 to 95% with the remainder comprised of nickel and trace elements. Iron meteorites are subdivided into classes both by chemical composition and structure. Structural classes are determined by studying their two component iron-nickel alloys: kamacite and taenite.

These alloys grow into a complex interlocking crystalline pattern known as the Widmanstätten Pattern, after Count Aloys de Widmanstätten who described the phenomenon in the 19th Century. This remarkable lattice-like arrangement can be very beautiful and is normally only visible when iron meteorites are cut into slabs, polished, and then etched with a mild solution of nitric acid. The kamacite crystals revealed by this process are measured and the average bandwidth is used to subdivide iron meteorites into a number of structural classes. An iron with very narrow bands, less than 1mm, would be a "fine octahedrite" and those with wide bands would be called "coarse octahedrites."

u will get nz iron meteorite that u see in pick it has been cut on one side i dont have nitric acid u can see the etch wth a loop


my cam is not taking clear picks will update pic soon

Shipping details

  • Free shipping within New Zealand  
  • Seller does not allow pick-ups
  • Seller location: Whangarei, Northland, NZ

Payment details

  • NZ bank deposit
  • Cash

About the seller

  • 89% positive feedback
  • Member since Dec 2011

Closes: Fri 24 Aug, 10:58 am. 2012