滇黔桂毗邻地区金矿成因新见解及深部勘探前景剖析

New insights into the genesis of gold deposits in the adjacent areas of Yunnan,Guizhou and Guangxi and analysis of deep exploration prospects

滇黔桂毗邻的金三角地区分布的微细粒浸染型金矿,按矿体的控制因素和分布规律,可分为硅化角砾岩层控制的层带型矿体和断裂控制的脉状矿体。从矿石矿物组合来看,应属于浅成低温热液成因矿床类型。从广西和云南一些金矿的矿区地质和区域地质特征来分析,该类型金矿的形成与这一地区的基性岩浆活动关系密切,其成矿过程中应有富含金属元素的岩浆期后热液参与成矿。

The fine-grain disseminated gold deposits distributed in the Golden Triangle area adjacent to Yunnan,Guizhou and Guangxi can be divided into stratified ore bodies controlled by silicified breccia layers and vein-like ore bodies controlled by faults according to the controlling factors and distribution rules of the ore bodies.From the perspective of ore mineral assemblage,it should belong to the type of superficial low temperature hydrothermal origin deposit.From the analysis of the geological and regional geological characteristics of some gold deposits in Guangxi and Yunnan,the formation of this type of gold deposit is closely related to the basic magmatic activity in this area,and there should be a post-magmatic period rich in metal elements during the mineralization process.Hydrothermal is involved in mineralization.