. Prospects of the Solovyovsky gold mining center at the Amur province

The authors have carried out the analysis of geological and structural features and gold content of the Solovyov gold-bearing center, located on the western flank of the Amur gold-bearing province and confined to the junction of the Aldano-Stanovoi, Mongol-Okhotsk and Amur geoblocks. The center consists of nine ore-placer nodes (Berezitovy, Solovyovsky, Urkiminsky, Dzheltulaksky, Talginsky, Uspenovsky, Ilikano-Unakhinsky, Zolotogorsky and Mogotsky). In geological and structural terms, ore-placer nodes correspond to intrusive dome uplifts (Berezite, Solovyovsky and Urkiminsky nodes) or tectonic blocks of the Aldano-Stanovoy geoblock base metamorphic rocks, saturated with intrusive Archean to late Mesozoic formations (Jeltulak, Talginsky, Uspensky, Ilikano-Unakhinsky, Zolotogorsky and Mogotsky nodes). In the center there are 383 placers of gold and 9 deposits of ore gold – Berezitovoye, Mosin Mine, Kirovskoye, Solovyevskoye, Malourkanskoye, Odolgo, Uspenovskoye, Golden Mountain, Uganskoe, as well as dozens of gold manifestations. Since 1867, about 500 tons of gold have been extracted from the placers of the center, on average about 3.3 tons per year. Gold deposits yielded about 53 tons of ore gold. The ratio of the amount of placer and ore gold extracted from the subsoil is 9.4:1. This indicates the center high prospects for finding new gold deposits. The prospects for further exploitation of placers have been identified, consisting in the introduction of new technologies that ensure the extraction of small and fine fractions of gold and thereby involve poor and man-made placers in the exploitation. It is shown that the Solovyovsky placer gold center future depends on the identification and exploitation of new deposits of gold-polymetallic, gold-sulfide-quartz, gold-quartz, gold-antimony and gold-mercury formations.