Hemusite

  
Extremely rare copper-tin-molybdenum sulfide. This specimen contains dark grey grains in matrix and perhaps single minute crystals in vug seen in close-up as dark spots
Origin: Osawa No. 4 Vein, Kawazu mine, Japan
Ex. Hori Mineralogy specimen
Sample size: 2.5 x 2 x 1 cm
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

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