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

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Chalcocite over Pyrite from Milpillas Mine, Cuitaca, Sonora, Mexico

 
Chalcocite over Pyrite from Milpillas Mine, Cuitaca, Sonora, Mexico

Chalcocite over Pyrite from Milpillas Mine, Cuitaca, Sonora, Mexico

Chalcocite over Pyrite from Milpillas Mine, Cuitaca, Sonora, Mexico

Chalcocite over Pyrite from Milpillas Mine, Cuitaca, Sonora, Mexico

DESCRIPTION:No. 75763
Mineral:Chalcocite over Pyrite
Locality:Milpillas Mine, Cuitaca, Sonora, Mexico
Description:Lustrous gray-metallic pyrite crystals 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 crystals. The incomplete pyrite crystal surfaces are gray-metallic color too. Collected in 2015. Analysis of coating performed from Ben Grguric at South Australian Museum.
Overall Size:5x3x3 cm
Crystals:2-19 mm
Archived: For reference only

 

 

 

 

 

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