kivi, matt
mõnede mitteraudmetallide (Cu, Ni, Pb jt) tootmise vahesaadus - vastava metalli ja rauasulfiidi sulam (vt niklikivi, vasekivi), an intermediate product of smelting: an impure metallic sulfide mixture made by melting of roasted sulfide ore, such as an ore of copper, lead, or nickel (see nickel matte, copper matte)
