Abstract: Copper is separately recovered from at least one nickeliferous sulfidic material selected from the group consisting of ore, ore concentrates, mattes or other metallurgical intermediates by roasting the sulfidic material to produce a calcine, mixing the calcine with a particulate carbonaceous reductant and with at least one halide heat transformable to halogen or to hydrogen halide at a segregation roasting temperature in small but effective amounts to halogenate copper values contained in the calcine, heating the mixture to a segregation roasting temperature between about 650.degree. C and about 700.degree. C whereby copper values contained in the calcine react to form a halide which is transported as a halide to the particulate carbonaceous reductant and metallic copper is precipitated from the copper halide on the surface of the carbonaceous reductant.