Analysis on geological condition for uranium mineralization in volcanic rock-type in Baochang-Duolen area

Baochang-duolun area is located in Yan-Liao uranium-polymental metallogenic central belt,it is in the same uranium mineralization belt with neighboring Guyuan 460 deposits and Keshiketeng Qi 470 deposit.They have the similar uranium metallogenic conditions.In recent years,with the launching of hydrothermal uranium deposit prospecting,our team has stepped into the volcanic-type uranium ore prospecting work once again.The area is the focus of the work.According to the understanding of the characteristics of existing uranium,combining information about geological and physic-chemical exploration in Baochang-duolun and the adjacent area,author comprehensively analyzes uranium mineralization about geotectonic background,basement,caprock and uranium mineralization,subvolcanic rock mass,faulted structure,volcanic structure,hydrothermal alteration,uranium mineralization and so on.Through a comparative research on 460,and 470 uranium deposits,author believes that the area has geological tectonic environment of the volcanic type uranium mineralization,that it has good geological conditions of uranium mineralization,and that it is a favorable area for finding a uranium deposit,and believes that the direction for prospecting uranium deposit in the area is subvolcanic rock uranium mine,and that it is important in prospecting work to pay attention to seeking the intersection tangency part of a regional fault and its subprime fracture,and subvolcanic structure such as volcanic passage,parasitic volcano,broken volcano,etc..