Geological Characteristics and Metallogenesis of Yinggezhuang Gold Deposit in Rushan of Shandong Province

Yinggezhuang gold deposit is a medium sized gold deposit which located in Muping-Rushan mineralization belt of Jiaodong peninsula.Its ore bodies are strictly controlled by Jinniushan fault,and occurred in veins,lens and cystic parallel oblique column type.The average thickness of ore bodies is 1.58～1.98m,while the average grade is 3.96×10-6～4.77×10-6.Its major ore type are pyrite quartz vein type.Metallic minerals are mostly composed of electrum,native gold,pyrite,and so on.Country rocks alteration includes sericitization,silicification,chloritization and pyritization,etc.It is showed that Yinggezhuang gold deposit is a medium-low temperature vein type gold deposit which belongs to Groves type orogenic gold deposits.