河北青龙岔沟铅锌及多金属矿床成因及找矿标志

Genesis and prospecting criteria of Qinglong Cha Gou Pb Zn and polymetallic deposit in Hebei

矿区横跨冀东-辽西近东西向区域多金属矿带的一部分,辽西已找到一定规模的金、铜和钼矿床,证明了本区有较好的成矿地质条件,矿区内的多金属矿成因类型属热液充填交代蚀变岩型矿床,其主要受两组成矿构造裂隙控制,即东西向主断裂和北西向断裂构造,主断裂带内基本不含矿,但是破碎带较宽,高岭土化蚀变强,少见金属矿化,推测其主要矿体,成矿富集部位主要在其附近的次一级断裂带内。矿区内南部出露花岗闪长岩体,矿区内的铅锌及多金属矿属中-低温热液矿床,主要蚀变有硅化、钾化、褐铁矿化、高岭土化、绿泥石化,推测是深部的隐伏岩体携带的含矿热液沿主断层进入后期断裂带内冷凝富集形成。

A certain scale of gold,copper and molybdenum deposits have been found in the west of Liaoning Province,which proves that there are better metallogenic geological conditions in this area.Controlled,that is,the main east-west faults and NW faults,the main faults are basically non-ore-bearing,but the fracture zone is wider,KAOLINIZATION and alteration is strong,rare metal mineralization,it is speculated that the main ore bodies,metallogenic enrichment mainly in the vicinity of the secondary fault zone.The granodiorite bodies are exposed in the south of the mining area.The Pb-Zn and polymetallic deposits in the mining area belong to the middle-low temperature hydrothermal deposits.The main alterations are silicification,potassization,limonitization,KAOLINIZATION and chloritization.It is presumed that the ore-bearing hydrothermal fluid carried by the deep concealed rock mass was formed by condensation and enrichment along the main fault into the later fault zone.