安徽和县香泉独立铊矿床铊的赋存状态研究  

Mode of occurrence of thallium in the Xiangquan thamum deposit,Hexian County,Anhui.

作　　者：范裕[1] 周涛发[1] 袁峰[1] 吴明安[2] 张千明[3] 侯明金[2] 胡清华[3] 

机构地区：[1]合肥工业大学资源与环境工程学院,合肥230009 [2]安徽省地质调查院,合肥230001 [3]安徽省地矿局327地质队,合肥230001

出　　处：《岩石学报》2007年第10期2530-2540,共11页Acta Petrologica Sinica

基　　金：国家自然科学基金项目(编号:40672062;40272048);高等学校博士学科点科研基金项目(编号:20050359013);国家重点基础研究发展规划973项目(编号:2007CB411405);安徽省优秀青年科技基金和安徽省国土厅地质勘查专项费项目的资助。

摘　　要：分散元素铊成矿作用的相关研究近年来已经取得了重要进展,但矿床中铊的赋存状态研究仍有待深入。香泉独立铊矿床位于长江中下游成矿带北侧的皖东地区,该矿床中铊的赋存状态研究对拓展铊元素成矿研究具有重要意义。本文通过矿相学、微量元素地球化学、电子探针分析和X射线粉晶分析等方法,确定了香泉铊矿床中黄铁矿是铊的主要载体矿物,铊在黄铁矿中主要以类质同象形式替代铁进入黄铁矿晶格,其次以纳米级、次纳米级铊矿物颗粒形式产出。Important progress has been made in the study of thallium mineralization in recent years, but its mode of occurrence in ore deposits remains to be further studied. The Xiangquan thallium deposit is located in eastern Anhui at the northern side of the Middle-Lower Yangtze valley metallogenic belt. Thallium in the deposit is recovered as an ore of thallium alone; the study of the mode of occurrence of thallium in the deposit has great significance for expanding the study of thallium mineralization. By using the mineralographic method, trace element geochemical method, microprobe analysis and X-ray diffraction analysis, pyrite in the deposit is determined to be the main carrier mineral of thallium. In pyrite, thallium occurs as isomorphs replacing iron and entering the lattice of pyrite, and less commonly it occurs as nano- and subnano-sized grains of thallium minerals.

关 键 词：铊矿床 黄铁矿 赋存状态 香泉 安徽 

分 类 号：P618.88[天文地球—矿床学]