Bornite

  
Bornite on chalcopyrite after betekhtinite on quartz rich matrix
Origin: Dzhezkazgan, Kazakhstan
Sample size: 7 x 5.5 x 2.7 cm
 
  
Bornite on pyrite with quartz
Origin: Tramway Mine, Butte, Butte District, Silver Bow Co., Montana, U.S.A.
Sample size: 8.3 x 7.5 x 3.7 cm
 

Photo courtesy of: 

Dan Weinrich

Dealer in fine mineral specimens

 

  
  
  
This specimen is comprised of crystalline chalcocite and bornite pseudomorph after chalcocite. Crystalline chalcocite is found as darker bluish coloured crystals with hexagonal form.
Origin: Flambeau Mine, Ladysmith, Rusk Co., Wisconsin
Ex-F. John Barlow Collection
Sample size: 7 x 4.5 x 4 cm
 

Photo courtesy of: 

John Veevaert, Trinity Mineral Co

Trinityminerals.com

 

  
Bornite on quartz
Origin: Dzhezkazgan, Kazakhstan
Sample size: 3.6 x 2.3 x 1.2 cm (top), 2.8 x 2.3 x 1.3 cm (bottom)
 
  
  
Two sharp and finely formed chalcopyrite crystals (to 2 cm) coated by bornite, on a contrasting matrix of crystalline epidote
Origin: Dashkesan Mine, Azerbajan
Sample size: 5.3 x 5.3 x 3.5 cm
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

Origin: Mt. Lyell, Tasmania, Australia
Sample size: unknown
Sample owner: Steve Sorrell
 

Photo courtesy of: 

Steve Sorrell

Crocoite.com

 

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