Griphite

Origin: Sitting Bull mine, Pennington Co., South Dakota, USA
Sample size: 6 x 4 x 3 cm
 
Origin: Everly mine, Pennington Co., South Dakota, United States (type locality)
Sample size: 6 x 3 x 3 cm
 
 
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

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