S.I. TRUSHIN (JSC “POLYMETAL UK”), V.E. KIRILLOV (Khabarovsk branch JSC “POLYMETAL UK”), D.S. BUKHANOVA, V.M. CHUBAROV (IVS FEB RAS)

Mineralogical features of gold ores from the Albazinsky and Ulbansky ore districts (Khabarovsk Territory)

The paper deals with petrographic and mineralogical features of gold-bearing changed country rocks and ores of the Albazinskoe deposit and Ulbansky volcanogen ore occurrences (Khabarovsk Territory, P. Osipenko and Tuguro-Chumikansky districts). Ore targets of the studied areas are located in different geological settings: in volcanic rocks (Trudnoe ore occurrence), in roots of paleovolcanoes (Albazino deposit), in intrusive rocks (Yagodnoe ore occurrence). Main ore minerals of the deposit and occurrences, the ontogenetic succession of their formation and the elemental composition are given. The formation affinity of near-ore metasomatites and ores is determined, the typification of gold ores is given.
Keywords: Khabarovsk Territory, Albazino deposit, gold occurrences, near-ore metasomatites, Au-Ag formation, mineral type, geochemical type, gold, sulphide minerals.