Nukundamite is a rare copper iron sulfide. It occurs as a primary mineral in Kuroko-type deposits and occurs as an alteration product of chalcopyrite. The type locality for nukundamite is the Undu mine, Nukundamu, Fiji, for which the mineral was named. Nukundamite occurs as metallic, opaque, copper-red, platey, hexagonal, intergrown masses of microscopic crystals. Other notable localities include: Bingham Canyon mine, Bingham district, Salt Lake Co., USA; Kusing Liar, Grasberg district, New Guinea, Papua Province, Irian Jaya, Indonesia; Cattle Grid deposit, Pematty Lagoon, Stuart Shelf, South Australia, Australia.
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