The Berezitovoe gold-polymetallic deposit (Upper Amur region, Russia): Structure, mineralogy and genetic aspects

Geoscience Frontiers

M. Santosh¹  Vadim G. Khomich²  Natalia G. Boriskina²  Alexandr S. Vakh² 

[1] Department of Earth Sciences, University of Adelaide, SA 5005, Australia;Far East Geological Institute, Far East Branch of Russian Academy of Sciences, 159 Prospect 100 let Vladivostoku, Vladivostok 690022, Russia;

关键词: Amur River head;    Gold;    Early Cretaceous;    Metallogeny;    Tectonics;   

DOI  :  10.1016/j.gsf.2015.10.003

来源: DOAJ

【 摘 要 】

The Berezitovoe deposit in the Sergachi volcano-plutonic and metallogenic belt preserves evidence for polymetallic mineralization of multiple stages. The steeply dipping garnet-tourmaline-muscovite-quartz metasomatites (with K-Ar ages of 132 ± 2.9 and 127 ± 4.4 Ma) carry two distinct stages of mineralization developed at different times: (1) polymetallic mineralization and (2) gold-quartz. The deposit is located within Paleozoic gneissose granitoids of the Pikansky complex (dated as 379 ± 1.1 Ma by zircon U-Pb method) intruded by early Cretaceous porphyry-like granites of the Haikta pluton (dated as 137 ± 0.67 Ma by zircon U-Pb method) and late Cretaceous dikes of porphyrites, porphyries, and lamprophyres. Evidence suggests the action of late gold-bearing hydrothermal fluids on the early polymetallic ores and the selective mobilization of some elements from these lead to redeposition together with complex sulphosalts.

【 授权许可】

Unknown