粤北下庄铀矿田成矿条件及找矿前景

Metallogenic Conditions and Prospecting Prospects of Xiazhuang Uranium Ore Field

粤北下庄铀矿田是我国花岗岩型铀矿重要的大型矿聚集区,区内铀矿资源具有成矿地质条件优越、成矿作用复杂等特点。近年来,随着南方硬岩型铀矿资源的不断枯竭,寻找新地区、新类型铀矿床显得尤为紧迫。在大致总结归纳区内断裂构造特征、岩浆活动和中基性岩脉与铀成矿作用关系的基础上,结合围岩蚀变、地幔流体及成矿物质来源,提出下庄铀矿田下步找矿方向即寻找构造、岩浆、蚀变构成的"三位一体"地段以及"交点型"铀矿床,为该地区对矿田研究及勘查下步工作提供依据。

Xiazhuang uranium ore field,located in the Northern Guangdong province,is the most important uranium deposit collective region of granite type in China.Uranium resources in this area have the characteristics of superior metallogenic geological conditions and complex mineralization.In recent years,with the continuous depletion of hard rock type uranium resources in South China,it is urgent to find new areas and new types of uranium deposits.Based on the summary of the relationship between fault structure,magmatism and basic disk and uranium mineralization in the inductive area,combined with the surrounding rock alteration,mantle fluid and metallogenic source,Proposed the next step of prospecting in the Xiazhuang uranium ore field,that is,searching for the"trinity"area and"intersection type"uranium deposits composed of structure,magma and alteration,It provides the basis for the further work of ore field research and exploration in this area.