Black ores / blæk ɔrz/ ores containing minerals belonging to the group of complex copper sulfides (sulfate salts). For example: Cu12,(Sb,As)4S13 can contain Fe, Zn, Ag, Hg, Ni, Bi, Se, Te
Ex. Prospectors discovered deposits of black ores, hinting at a rich source of metallic minerals yet to be exploited.