Chalcopyrite - Arakawa Mine (Kyowa-Arakawa), Japan - 6.2 x 8.1 cm
Mineral: Chalcopyrite
Locality: Arakawa Mine (Kyowa-Arakawa), Daisen City, Akita Prefecture, Tohoku Region, Honshu Island, Japan
Dimensions: 6.2 x 8.1 cm

Description: A flat plate of brassy chalcopyrite crystals to 1.8 cm.