遵义丁台镍钼矿床稀土元素地球化学特征及其地质意义  

REE Geochemical Characteristics in Dingtai Ni-Mo Deposit in Zunyi,and Their Geological Significance

作　　者：张梅江 李明琴[2] 邓旭升[2] 张双菊[3] 谭月 

机构地区：[1]贵州省地质调查院,贵州贵阳550005 [2]贵州大学资源与环境工程学院,贵州贵阳550003 [3]贵州理工学院资源与环境工程学院,贵州贵阳550003

出　　处：《贵州大学学报（自然科学版）》2013年第4期36-39,53,共5页Journal of Guizhou University:Natural Sciences

基　　金：国家自然科学基金项目(46302001)

摘　　要：对丁台镍钼矿床中的矿层及其顶、底板岩石进行系统采样，测试分析样品中的稀土元素含量，探讨稀土元素地球化学特征。研究结果表明，矿床中的∑REE变化大，轻、重稀土均富集，富集程度相近，分馏程度不明显；δCe=0．54-0．79，平均0．68，δEu：1．02-2．61，平均1．45；La／Ce=0．60-0．93．这些特征说明矿床形成于气候干燥条件下的海相热水沉积还原环境。∑REE-La／Yb图解反映成矿物质具有多来源特征。Samples were systematically collected samples and REE contents of ore and rock in ore roof and foot- wall were analyzed in Dingtai Ni-Mo deposit in Zunyi. REE geochemical characteristics were distinguished, i e, ∑ REE contents are large change , ∑ LREE and ∑ HREE are abundant, fractionation degree are not obvious, δCe = 0.54 - 0.79 （0.68 on average）, δEu = 1.02 - 2.61 （ 1.45 on average） ; La/Ce = 0.60 - 0.93. REE geo- chemical characteristics suggest that Dingtai Ni-Mo deposit were deposited in hot seawater sediments under reduc- tion environment with dray climate. The graph of ∑REE- La/Yb suggests that mineralizing material have many origins.

关 键 词：镍钼矿床 稀土元素地球化学 遵义丁台 贵州 

分 类 号：P595[天文地球—地球化学]