邯郸娄里金矿铅同位素组成及其地质意义

Composition and implications of lead isotopic in Louli gold deposit,Handan district

在邯郸永年洪山碱性杂岩体及其附近发现了数条金矿化带和多处铜矿化点。碱性杂岩体及其周边多金属及贵金属矿化的发现突破了以往邯郸-邢台地区只是矽卡岩式铁矿富集区的认识,找矿成果具有重要的理论和实践意义。以洪山碱性岩体北侧娄里金矿为例,测试分析了金矿石、斑岩体及不同围岩中Au,Cu等成矿元素含量,初步确定区内燕山期火成岩是形成金矿床和铜矿床重要的矿源层。在此基础上利用铅同位素示踪和分析了娄里金矿成矿物质来源,亦得出相同的结论。研究结果表明,形成碱性岩体的岩浆以地幔源为主,区内金、铜成矿元素均来源于幔源的碱性岩体。

Several gold mineralization belts and copper mineralization points have been found in Hongshan alkaline complex rock mass and the adjacent area in Handan district. All these discoveries have brought a new conception that there is not only a place of skarn type iron ore enrichment region,but also is a potential prospecting area of nonferrous materials and precious metals. All this prospecting results have important theoretical and practical significance. Taking the Louli gold deposit as an example,which deposit located in the north of hongshan alkaline rock mass,we analyzed the metallogenic element and lead istotopic of ore,porphyry and different surrounding rock in order to find out the metallogenic material source. The analysis results have drawn a same conclusion that metallogenic material source mainly derived from the alkaline rock mass from which come gold and copper metallogenic.