Pyrolusite

  
Origin: Nchwaning I Mine, Kalahari Manganese Field, South Africa
Sample size: 3.2 x 3.0 x 2.3 cm
 
  
  
Origin: Karnataka, India
Sample size: 6.0 x 5.0 x 4.0 cm
 
  
Origin: Elgersburg, Ilmenau, Thuringia, Germany
Ex. Paul Jung collection
Sample size: 5 x 4 x 3.8 cm
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

  
Origin: Caland pit, Atikokan, Hutchinson Township, Rainy River district, Ontario, Canada
Sample size: 7.3 x 6.2 x 3.3 cm
 

Photo courtesy of: 

Dan Weinrich

Dealer in fine mineral specimens

 

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