中文摘要：

研究了铜陵狮子山矿田岩浆岩及金矿床矿石和蚀变岩石的稀土元素地球化学特征。矿田内3种代表性的岩浆岩稀十元素含量及Eu异常特征相似，轻重稀土元素比值有规律地变化，反映其具有相同的来源，是同源岩浆演化的结果，稀±元素特征显示岩浆的形成机制为分离结晶作用。金矿床矿石和蚀变岩石的稀土元素球粒陨石配分模式呈右倾斜型式，与矿区岩浆岩基本一致；稀土元素含量界于岩浆岩和围岩大理岩之间，显示成矿流体对岩浆岩的淋滤迁移和对围岩灰岩的叠加改造，反映成矿物质主要来源于岩浆作用；矿石Eu异常特征表明成矿热液为地壳浅部低压下岩浆分异的还原性富cl-的流体；从成矿早期矽卡岩化到晚期块状硫化物矿石的形成，轻重稀土元素分异和Eu异常特征均显示岩浆热液演化的特征。

英文摘要：

The REE geochemical characteristics of magmatic rocks and gold deposits in Shizishan orefield of Tongling were studied. Three types of magmatic rocks have almost the same chondrite-normalized REE patterns, Eu and Ce anomalous values, and EREE, ELREE/EHREE regular changes, which indicates that their magmas come from the same source and their digenetic mechanism is fractional crystallization. In three gold deposits, the mineral ores and related altered rocks have similar chondrite-normalized REE patterns and sharp Eu positive anomalous values.The REE contents reduce from magmatic rocks to skarnization or alteration magmatic rocks, skam type ores, sulphide type ores, well-rocks limestone or marble. The REE geochemical characteristics of the ores and related rocks show that primary fluids originate from magmatic differentiation in lower pressure of shallow crust, ore-forming hydrothermal solutions gain REE and mineralization elements further from leaching the magmatic rocks, then superimpose and reform the limestones or marbles and deposite ore-forming material.