以巧家—金沙厂成矿带为例探讨软—硬岩性界面对热液矿床的控制

Taking Qiaojia Jinshachang metallogenic belt as an example,this paper discusses the control of soft hard lithologic interface on hydrothermal deposits

“成矿界面”是指在“地质界面”上发生成矿富集作用的地质记录,岩性界面成矿作为成矿界面的一种,对热液成矿作用具有很明显的控矿特征。巧家-金沙厂成矿带内主要的铅锌矿床例如金沙厂铅锌矿、茂祖铅锌矿、炎山小田村铅锌矿具有相似的矿床成因模式,主要为含矿热液喷流沉积成矿作用,具有明显的软-硬岩性界面控矿特征。

"Metallogenic interface" refers to the geological record of metallogenic enrichment on the "geological interface".As a kind of metallogenic interface,lithologic interface mineralization has obvious ore controlling characteristics for hydrothermal mineralization.The main lead-zinc deposits in Qiaojia Jinshachang metallogenic belt,such as Jinshachang lead-zinc deposit,Maozu lead-zinc deposit and Yanshan xiaotiancun lead-zinc deposit,have similar deposit genetic models,mainly ore-bearing hydrothermal exhalative sedimentation mineralization,with obvious ore control characteristics of soft hard lithologic interface.