(1. 中南大学 有色金属成矿预测教育部重点实验室，长沙 410083，
2. 中南大学 地球科学与信息物理学院，长沙 410083；3. 山东招金集团，招远 265400)
摘 要: 大尹格庄金矿床位于招平断裂带中段，金矿体主要赋存于招平断裂主裂面下盘的黄铁绢英岩化碎裂岩和黄铁绢英岩化花岗岩中。岩、矿石主成分分析显示：胶东群变质岩与煌斑岩成分均与玄武岩的相似，大尹格庄矿区煌斑岩与焦家矿区和玲珑矿区煌斑岩在化学成分上差异明显。绢英岩化蚀变过程中，显著带入Si和K，而Na、Ca和Mg等组分带出明显。稀土元素分析显示：黄铁绢英岩化蚀变和金成矿过程中显著带出稀土元素，胶东群变质岩的原岩与拉斑玄武岩有关，而煌斑岩及其他样品的初始物源又与胶东群变质岩有关。微量元素分析显示：Au、Ag、Cu、Pb、As、Mo、Bi、Rb和Sr等元素在金矿体及黄铁绢英岩化蚀变岩中呈聚集趋势，但Au元素的聚集与Cu、As、Pb、Zn、Hg和Ag等元素的聚集不同步。大尹格庄金矿的形成与燕山期构造运动和岩浆活动关系密切，并受到断裂构造系统、胶东群变质岩、玲珑花岗岩及伴生岩脉等条件的复合制约，长期大规模热液对流循环及所伴随的动态开放条件下的水岩反应和物质运动是大尹格庄金矿成矿的关键。
关键字: 岩石化学；水岩反应；成矿作用；大尹格庄金矿；胶西北
Dayingezhuang gold deposit, northwest Jiaodong peninsula
（1. Key Laboratory of Metallogenic Prediction of Nonferrous Metals, Ministry of Education,
Central South University, Changsha 410083, China
2. School of Geosciences and Info-Physics, Central South University, Changsha 410083, China;
3. Shandong Zhaojin Group Corporation, Zhaoyuan 265400, China）
Abstract:The Dayingezhuang gold deposit was located in the middle part of Zhaoping fault zone. The main orebodies occurred in cataclasite and granite with beresitization alteration in the fault’s footwall. The principal component analysis of the rocks shows that the compositions of Jiaodong Group metamorphic rocks and lamprophyres are similar with those of basalts; the chemical compositions of lamprophyres in Dayingezhuang diggings are different from those in Jiaojia and Linglong diggings. In the process of sericitization, Si and K are carried in significantly; Na, Ca and Mg are brought out obviously. The analysis of rare earth elements shows that rare earth elements are brought out obviously in the process of beresitization and mineralization. The virgin rocks of Jiaodong group metamorphic rocks are connected with tholeiite. The original source of lamprophyres and other rock samples are related to Jiaodong group metamorphic rocks. The analysis of trace elements shows the collective trend of Au, Ag, Cu, Pb, As, Mo, Bi, Rb, Sr etc in ores and beresitization alterated rocks, but the aggregation of Au is out of sync with that of Cu, As, Pb, Zn, Hg, Ag and so on. The formation of Dayingezhuang gold deposit has close relation with tectonic movement and magmatism in Yanshanian period and is restricted by the fracture structure system, Jiaodong group metamorphic rocks, Linglong granite and concomitant dikes. Long-term and large-scale convective circulation of hydrothermal solution and concomitant water-rock reactions and motion of matter in the dynamic-open condition are the keys of the mineralization in Dayingezhuang gold deposit.
Key words: petrochemistry; water-rock reaction; mineralization; Dayingezhuang gold deposit; northwest Jiaodong peninsula
