福建尤溪丁家山矿区闪锌矿中微量元素及其对晶体结构影响研究

摘要

应用矿相显微镜、显微电子能谱分析、粉晶X射线衍射等分析手段，研究了丁家山闪锌矿中微量元素的存在状态和富集特征。通过闪锌矿晶体化学式的对比，研究发现闪锌矿可以分为两个世代，它们的成矿温度存在明显差异。通过微量元素比值推断该矿床为高中温内生矿床，并经受过后期改造。闪锌矿受类质同象离子置换的影响，其晶胞参数与微量元素含量关系密切。同时在该矿区首次发现了白钨矿。%In this article, polarizing microscope analysis, electron probe micro analysis (EPMA) and powder X-ray diffraction (XRD) were applied to study the characteristics of trace elements of sphalerite in the Dingjiashan deposit of Youxi, Fujian province. By the comparison of sphalerite crystal chemical formula, it is found that there are two generations of sphalerite and their mineralization temperatures are different. This deposit is identified as an endogenetic deposit according to the data of trace elements ratio analysis. The unit cell parameters of sphalerite and trace element contents are closely related by isomorphic ion replacement. Meanwhile, scheelite is found in the deposit