Details

Autor(en) / Beteiligte

• Borovikov, A. A.
• Proskurnin, V. F.
• Palyanova, G. A.
• Petrov, O. V.
• Bortnikov, N. S.

Titel

Physicochemical Conditions of Formation of Productive Mineral Assemblages of Gold Deposits in the Taimyr–Severnaya Zemlya Orogen

Ist Teil von

• Doklady earth sciences, 2022-12, Vol.507 (Suppl 3), p.S375-S381

Ort / Verlag

Moscow: Pleiades Publishing

Erscheinungsjahr

2022

Quelle

SpringerLink

Beschreibungen/Notizen

• The PTX parameters of the formation of gold mineralization in the Taimyr–Severnaya Zemlya orogen were established for the first time based on data from studies of fluid inclusions. The gold ore formation temperature ranges from 310 to 105°C; the formation pressure is not lower than 110–96 MPa. Ore-forming fluids were characterized by a NaCl + KCl + H 2 O + CO 2 + CH 4 + N 2 composition and salinity up to 9.7 wt % NaCl eq. The compositions of native gold (varying predominantly from 980 to 820‰ in fineness) and the minerals of productive mineral assemblages have been determined. The ore-forming fluids of the gold–sulfide–quartz ore occurrences of the Shrenk–Faddei accretionary zone (Yasnenskoe and Malinovskoe in Northeastern Taimyr) are more oxidized and less saline compared to the gold–quartz occurrences of the orogenic type in the Minin–Bolshevik miogeoclinal zone (Nizhnelitkenskoe, Vidimoe, and Nerpichye).