Copper

        

Origin: North Cliff Mine, Keweenaw Co., Michigan, U.S.A.

Sample size: 5.0 x 4.1 x 3.0 cm

 

  

  

A sharp and unusual cluster of 3 somewhat bulbous, tenorite-coated copper crystals from the Adventure Mine. The sides of the 3 crystals are sharp, though the crystal tips are naturally etched or corroded. A sparkly green to brown mineral (epidote?) coats portions of the copper crystals and sharp second-generation tetrahexahedron copper crystals to 4 mm are scattered mostly on the tips of the larger copper crystals.

Origin: Adventure Mine, Ontonagon Co., Michigan, U.S.A.

Sample size: 3.7 x 2.8 x 2.3 cm

 

  

Origin: Copper Creek Shaft, adj. to Coppercorp open pit mine, N. of Sault Ste. Marie, Ontario, Canada

Sample size: 6 x 4 x 3.0 cm

 

  

Origin: Copper Falls Mine, Keweenaw Co., Michigan, U.S.A.

Sample size: 5.5 x 4.1 x 3.1 cm

 

        

 

     

 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone