AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Mexico > Pyrite with Chalcocite coating

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Pyrite with Chalcocite coating from Milpillas Mine, Cuitaca, Sonora, Mexico

 
Pyrite with Chalcocite coating from Milpillas Mine, Cuitaca, Sonora, Mexico

Pyrite with Chalcocite coating from Milpillas Mine, Cuitaca, Sonora, Mexico

Pyrite with Chalcocite coating from Milpillas Mine, Cuitaca, Sonora, Mexico

DESCRIPTION:No. 75761
Mineral:Pyrite with Chalcocite coating
Locality:Milpillas Mine, Cuitaca, Sonora, Mexico
Description:Lustrous gray-metallic pyrite crystal in white dickite-rich matrix. The unusual gray color is caused by a thin (5-10 µm) layer of chalcocite on the surfaces of the pyrite crystal. A few crystal faces not fully coated exhibit yellow-metallic color. Collected in 2015. Analysis of coating performed from Ben Grguric at South Australian Museum.
Overall Size:3.5x2.5x2 cm
Crystals:22 mm
Archived: For reference only

 

 

 

 

 

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