TY JOUR TI Copper slags mineralogy of the Vyisky plant KW fayalite KW hercynite KW sulphides KW material composition KW copper slags KW Vyisky copper plant JO Vestnik of geosciences AU Erohin, Y.V. AU Ponomarev, V.S. AU Zakharov, A.. AU Leonova, L.V. PY 2025 IS 0 PB FSBI FIC "Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences"