Cassiterite

  
"Wood tin"
Origin: Santa Maria del Oro, San Luis Potosi, Mexico
Sample size: 4.7 x 4.0 x 3.1 cm
 
  
Cassiterite with ilmenite on smoky quartz
  
 
  
Twinned cassiterite
Origin: Erongo Mountains, Namibia
Ex Charlie Key collection
Sample size: 5.6 x 3.5 x 3.1 cm (top), 3.2 x 3.1 x 2.3 cm (2nd/3rd row), 3.3 x 3.3 x 2.5 cm (bottom)
 
  
  
     
  
Origin: Viloco mine, Loayza Province, La Paz Department, Bolivia
Sample size: 3.7 x 2.9 x 2.5 cm
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

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