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为探讨西华山钨矿床流体的稀土元素和微量元素特征,明确热液和成矿物质的来源,揭示成矿流体性质,采用高精度电感耦合等离子质谱(ICP-MS)方法对该矿石英脉流体包裹体的微量和稀土元素进行了分析测试。结果表明,流体包裹体中稀土元素总量变化大,主要表现为轻稀土富集,轻、重稀土内部分异程度不均一,轻稀土分馏程度明显大于重稀土分馏程度;δEu变化范围比较大,大部分样品表现为δEu的负异常;微量元素之间的比值反映出西华山钨矿床成矿物质从深源到浅源,主要来源于岩浆,同时又有少部分来源于大气水循环作用淋滤围岩地层所产生的矿物质,成矿流体处于流体演化的晚期热液低温阶段。
In order to explore the characteristics of rare earth elements and trace elements in the fluid of Xihuashan tungsten deposit, clarify the sources of hydrothermal and ore-forming materials and reveal the properties of ore-forming fluid, the ICP-MS The inclusion of trace and rare earth elements were analyzed and tested. The results show that the total amount of rare earth elements in fluid inclusions varies greatly, mainly as light rare earth enrichment, heterogeneous degree of heterogeneity of light and heavy rare earths, fractionation degree of light rare earth is obviously greater than that of heavy rare earth fraction; δEu is relatively wide, The majority of samples showed negative δEu anomalies. The ratio of trace elements reflected the mineralization of Xihuashan tungsten deposit from deep source to shallow source, mainly from magma, while a small proportion of them originated from atmospheric water circulation The minerals and ore-forming fluids produced by the rock formation are in the late stage of hydrothermal fluid evolution.