内蒙古喀喇沁旗大西沟萤石矿矿床地质特征及找矿方向

Geological characteristics and prospecting direction of Daxigou fluorite deposit in Karaqin Banner Area,Inner Mongolia

内蒙古喀喇沁旗大西沟萤石矿为20世纪40年代发现的一处大型萤石矿床。矿区内共有9条矿体,均赋存于断裂破碎带内,其形态、产状受构造严格控制。通过对该矿地质特征、矿体特征、围岩蚀变以及矿石的稀土元素地球化学特征进行分析,认为大西沟萤石矿属于比较典型的热液裂隙充填型矿床。在综合研究的基础上,提出应该在萤石矿化带、硅化蚀变带以及构造破碎带发育位置开展找矿勘查工作。

Daxigou fluorite deposit in Karaqin banner area,Inner Mongolia is a large fluorite deposit,which was found in the 1940s.There are 9 ore bodies in the mining area,which occur in the fault structural fracture zone,and their shape and occurrence are strictly controlled by the fault structure.By analyzing the geological characteristics,ore body characteristics,wall rock alteration and geochemical characteristics of rare earth,it is believed that the Daxigou fluorite ore is a typical hydrothermal filling type.On the basis of comprehensive research,it is proposed that the prospecting work should be carried out in the development position of fluorite mineralization zone,silicate alteration zone and tectonic fracture zone.