关键词: 金矿床 矿床成因 成矿模式 深部预测 胶莱盆地

Abstract: Jiaolai Basin is located in the MupingRushan gold metallogenic belt,with frequent tectonic magmatic activity,which provides excellent conditions for the formation of gold deposits.It is another important gold,copper,lead,zinc and other polymetallic metallogenic area in the Jiaodong area.In order to explore the genesis and metallogenic model of the gold deposits in this gold mining area,the mineralization geological characteristics,metallogenic geological conditions,metallogenic fluids,and metallogenic material sources of the LongkouTuidui gold deposit and surrounding gold deposits were used to further explore the genesis and metallogenic properties of the deposits mode.The study concludes that the gold deposits in the northeast margin of the Jiaolai Basin are generally controlled by the northeasttrending Taocun fault,LongkouTuiduo fault,ZhuwuYazi left strike slip fault structure system and the edge of the Lafen basin.The system control of the shovel slippage structure.The oreforming materials originate from the mixed area of deepsource magma,and the orebearing fluid extracts the oreforming materials in the formation of Jingshan Group during the upward migration process.In the (120±10) Ma landslide structure system and its secondary faults along the basinedge northeast trend,it was replaced and filled with mineralization.In an acidic fluid environment,a pyritetype altered rocktype gold deposit with silicification and sericite alteration as the main formation is formed.The metallogenic model of gold deposit concentration area in the northeast margin of Jiaolai Basin is proposed.

Key words: gold deposit,genesis of ore deposits,metallogenic model,deep prediction,jiaolai basin