TY JOUR TI Gold and minerals of the heavy fraction of alluvial sediments in the Pokyu river (western slope of the Volsko-Vymskaya ridge, Middle Timan) KW gold nugget KW placer KW alluvial sediments KW Volsko-Vymskaya ridge KW Middle Timan JO Vestnik of geosciences AU Parhacheva, K.G. PY 2022 IS 0 PB FSBI FIC "Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences"