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)
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