试论胶东金成矿区成矿物质条件

对胶东群、粉子山群和蓬莱群的岩石学、地球化学等特征研究认为，胶东群是金的主要矿源层；粉子山群和煌斑岩脉也提供了部分金的来源。花岗质岩浆活动促使成矿物质转移。

Discussion on Conditions of ore-Forming Materials in Jiaodong Gold Metal1ogenic Province,Shandong

Based on the petrologic and geochemical features of Jiaodong Group,Fengzishan Group and Penglai Group,it was confirmedthat Jiaodong Group was the main source bed of gold deposits. Fengzishan Group and lamprophyres vein also provided parts ofAu. Granitic magmatic activities maiuly made the ore-forming elements transformed. The author also studied the geochemicalfeatures of gold deposits. It was believed that ore-forming fluid was magmatic hydrothermal fluid nuxed with a part of meteroicwater, being of low-middle temperature,middle pressure,salinity and density and abundant H_2O-CO_2.The se showed thatmetallogenic hydrothermal fluid had multi-source;and mineralization had multi-phases and multi-stages.