A block of Paleoarchean metamorphic rocks (Dambuki group), bounded by the Gilyui and Dzheltulak faults to the north and southwest, respectively. The area is triangular in plan view, covers about 1500 km2 and extends west of the Zeya reservoir, along the Ilikan and Gilyui river valleys.
The Dambuki cluster is characterized by numerous high-grade gold placers and a few primary gold deposits that have been mined since the late 19th century. Early Cretaceous pyroxenite-peridotite-hornblendite intrusions with gold-bearing Cu-Ni mineralizations are regarded as the primary gold sources of the placers.
Ref.:
- Stepanov, V.A., Rogulina, L.I., Melnikov, A.V., and Yusupov, D.V. (2007): Native Gold in Cu- and Ni-Bearing Pyroxenite-Cortlandite Intrusions and Placers of the Dambuki Ore Cluster, the Amur Region. Geology of Ore Deposits 49(7), 619-623.
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