Siderite

  
  
  
Highly lustrous, slightly modified, greenish color rhombohedra of siderite associated with modified crystals of pyrite associated with minor quartz crystals. The largest Siderite crystal measures 2.3 cm and the largest Pyrite crystal measures 2.5 cm.
Origin: Tasna mine, Rosario section of Cerro Tasna, Nor Chichas Province, Potosi Department, Bolivia
Sample size: 9.2 x 7.0 x 3.9 cm
 
  
  
Siderite on albite
Origin: Poudrette Quarry, Mt. St-Hilaire, Quebec, Canada
Ex. Steve Chamberlain collection
Sample size: 10.5 x 8.5 x 7.5 cm
 
  
Siderite on quartz
Origin: Neudorf, Harz Mts., Germany
Ex. E. Mitchell Gunnell and Richard Hauck collections
Sample size: 5.7 x 5.2 x 3.1 cm
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

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