武夷山成矿带铀金耦合机制研究——以江西坳子背矿床为例OA

The Wuyishan metallogenic belt is an important uranium and polymetallic metallogenic belt in China,and the Aozibei deposit in Jiangxi Province,located in the northwestern part of the Hecao-keng uranium ore field within this belt,is one of the key deposits in southern Jiangxi.To investigate the uranium-gold coupling mechanism of the Aozibei deposit,this study conducts a systematic analysis based on a comprehensive review of previous exploration achievements,integrated with mineralization relationships,distribution characteristics,and geophysical-geochemical exploration data including gamma-ray surveys,210Po sampling,and magnetic surveys.The results indicate that the uranium-gold coupling in this deposit is controlled by multiple factors such as mineralization stages and structure-li-thology.The uranium mineralization zone of phase Ⅳ is a composite high-field area for gold,with a positive correlation between uranium and gold grades,reflecting a strong"cogenetic and syn-process"coupling.In contrast,gold mineralization is not significant in the uranium mineralization zones of pha-ses Ⅰ,Ⅱ,and Ⅲ.Gamma-ray residual anomalies often overlap with gold anomalies,210Po anomalies,and magnetic anomalies,and the multi-parameter overlapping areas are identified as the optimal target zones for combined uranium and gold exploration.This study clarifies the metallogenic association be-tween uranium and gold in the Aozibei deposit,providing theoretical support and practical basis for the combined exploration of uranium and gold in similar deposits within the Wuyishan metallogenic belt.