【摘要】 含碲金矿床中碲的赋存状态研究是对其进行综合开发利用的技术关键。文章采用高分辨率扫描电镜（SEM）结合X射线能谱（EDS）和元素面分布技术（EDS_Mapping）,首次对山东省归来庄金矿田的卓家庄金矿床中金属类微细矿物及蚀变围岩进行元素空间分布及丰度分析,定性确定可能存在的矿物种类、形态特征及各矿物间的空间关系。在此基础上,采用EDS微区成分分析法分别对各含碲矿物进行了精确的成分测定,最终得到矿石中含碲矿物的化学式和空间分布特征。研究结果表明,山东卓家庄金矿床中含碲矿物均以浸染状的他形镶嵌分布于主矿物之间,颗粒大小从几微米到几百微米,总体以二十几微米最多,不同粒级的碲化物常相互伴生;含碲矿物种类有单质碲矿、PbTe、FeTe₂、AgAu₂Te₆和Cu_xAg_1xAu₂Te₆,其中后两种矿物为本研究首次发现。更多还原

【Abstract】 The investigation of the modes of occurrence of telluride in tellurium_bearing gold deposits is a key problem for comprehensive development and utilization of tellurium_bearing gold deposits. In this paper,the authors presented for the first time analytic results of spatial distribution and abundance of elements for metal micro minerals and altered rocks from the Zhuojiazhuang tellurium bearing gold deposit of the Guilaizhuang gold orefield inShandong Province by using high resolution scanning electron microscopy（ SEM） and X ray energy dispersive spectrometry（ EDS） along with EDS Mapping analysis, and determined qualitatively the possibly existent minerals,morphological characteristics and the spatial relationship between the minerals. Then,an accurate determination of the components in tellurium_containing minerals was performed based on the EDS micro area composition analysis to obtain the chemical formula and distribution characteristics of the tellurium containing minerals.The results show that the tellurium_bearing minerals in the Zhuojiazhuang gold deposit occur in disseminated form with anhedral granular textures between the main minerals,that grain sizes vary from a few microns to hundreds of microns,generally at two dozen microns,and that the tellurium_bearing minerals with different particle sizes are usually associated with each other. The tellurium bearing minerals include Te,PbTe,FeTe₂,AgAu₂Te₆,and CuxAg_1xAu₂Te₆,with AgAu₂Te₆ and Cu_xAg_1xAu₂Te₆ being found for the first time.更多还原