Copper World
Caledonite
Camérolaite
Carrollite
Chalcanthite
Chalcophyllite
Chanabayaite
Chenite
Chloroxiphite
Claraite
Clinochalcomenite
Clinoclase
Conichalcite
Copper
Cornwallite
Cumengeite
Cuprocherokeeite
Cupromolybdite
Cyanotrichite