安徽安庆铜矿床稀土元素地球化学研究

Geochemistry of Rare Earth Elements of Anqing Copper Deposit in Anhui Province

对比研究了安徽安庆铜矿床中矿石、矽卡岩、闪长岩及地层的稀土元素地球化学特征 ,借以示踪成矿物质来源 ,并通过模拟平衡热液稀土元素的模型探讨了成矿热液流体的来源。结果表明 ,安庆矽卡岩型铜矿床成矿作用过程中稀土元素有较强的活动性 ,成矿物质来源于闪长岩体 ,成矿热液流体来源于闪长质熔体。

The geochemical features of REE were studied by comparing the copper ore with the skarn, the diorite and the stratum, to trace the source of metallogenic materials in Anqing copper deposit in Anhui province. And the origin of metallogenic hydrothermal fluids was studied through simulating REE pattern of the balanceable hydrothermal fluids. The results indicate that the metallogenic materials come from the diorite and the metallogenic hydrothermal fluids come from the dioritic magma. The results also show that the rare earth elements are relatively mobile during metallization.