TY JOUR TI Gold in Ores of the Natalka Giant Deposit (North East Russia): Content, Distribution and Speciation KW Natalka deposit KW gold KW ores KW content KW distribution KW gangue minerals KW sulfide minerals KW arsenopyrite KW pyrite KW speciation JO Russian Journal of Earth Sciences AU Kravtsova, R.G. AU Makshakov, A.S. AU Tauson, V.L. AU Lipko, S.V. AU Belozerova, O.Y. PY 2025 IS 25 PB Geophysical Center of the Russian Academy of Sciences