Ferrokesterite

  
  
Origin: Cligga Mine, St. Agnes Dist., Cornwall, England
Ex. John Parnau collection
Sample size: 4.2 x 2.8 x 1.8 cm
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

  
Blackish massive area of about 3 x 3 cm with other sulfides.
Origin: Snowflake mine, Revelstoke, British Columbia, Canada
Sample size: 8 x 6 x 6 cm
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

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