Arsenopyrite

  
Arsenopyrite coated with pyrite and siderite
Origin: Panasqueira, Portugal
Sample size: 5 x 4.3 x 5.1 cm
 
  
Arsenopyrite with minor quartz
  
Arsenopyrite with purple fluorite
  
Origin: Yaogangxian Mine, Chenzhou Prefecture, Hunan, China
Sample size: 4.5 x 6.2 x 3.6 cm (top), 4.2 x 4.6 x 5.2 cm (2nd/3rd row), 28 x 21 x 12 mm (bottom)
 

Photo courtesy of: 

Dan Weinrich

Dealer in fine mineral specimens

 

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