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分析了粤西廉江庞西垌银矿床不同地质体岩石稀土元素地球化学特征,对矿床围岩花岗岩的成因以及矿床成矿物质来源进行了讨论,认为英桥花岗岩体为壳幔混合源同熔花岗岩。银矿床中矿化蚀变岩继承了原岩的稀土特征,热液成因石英脉的稀土元素特征与混合岩基本一致,反映成矿物质主要来源于混合岩。
The geochemical characteristics of rare earth elements in different geologic rocks of the Lianjiang Pangxiu silver deposit in the west of Guangdong Province are analyzed. The genesis of the granite and the origin of ore-forming materials are discussed. It is concluded that the Yingqiao granite is a crust-mantle mixed source granite. The mineralized altered rocks in the silver deposit inherit the rare earth characteristics of the original rocks. The characteristics of the rare earth elements in the quartz veins of hydrothermal origin are basically the same as that of the mixed rocks, reflecting that the ore-forming materials are mainly derived from the mixed rocks.