The Central Aldan Gold—Uranium Ore Magmatogenic System,Aldan—Stanovoy Shield, Russia

摘要

Abstract—The Central Aldan ore district (CAOD) is considered as an integral ore-forming magmatogenicsystem (TOMS) consisting of ore-forming systems of different ranks. The epicenter of the IOMS is occupiedby the main (head) magma conduit expressed at the present erosion level as the Western EI'kon magmaticarea. The systematic radial position of the main ore-bearing zones relative to the IOMS's epicenter is consid-ered as an indication of their relation to the head magma conduit. There are daughter ore forming systems ofthe first order (the Mon (EOS), Kuranakh (KOS), and Tommot (TOS)), as well as ore systems of higherorders. Ore zoning distinctly observed in the EOS and KOS and outlined in the TOS consists of the changeof the gold or molybdenum (EOS) mineralization for gold—uranium mineralization toward the head of themagma conduit. The ore objects are derivatives of magmatic reservoirs (chambers) located at different levelsof the staged magmatogenic system. The gold and uranium mineralization is mainly related to the pervasivepotassic metasomatism. The CAOD is considered as a superproductive area promising for revealing new largeore deposits and recommended as a priority object for large scale gold and uranium exploration.