四川天宝山铅锌矿床分散元素镉锗镓富集规律

摘要

Due to the content of the dispersed elements is very low in the earth's crust, they are difficult to form independent minerals and independent deposits. Therefore, it is of important significance theoretically and practically to research the dispersed elements associated in deposits. Based on the observation of the common microscope and the means of electron microprobe and ICP-MS analysis, the authors analyze the dispersed elements of cadmium and germanium and gallium in the ore and minerals from the Tianbaoshan Pb-Zn deposit of Sichuan. The conclusion is that the occurrence status of the dispersed elements Cd, Ge and Ga in the Pb-Zn deposit exist as isomorphism or mechanical mixing materials. The enrichment law of the dispersed elements Cd, Ge and Ga is that Cd mainly enriches in sphalerite, Ge and Ga mainly enrich in galena.%由于分散元素本身在地壳中含量很低,很难形成独立矿物和独立矿床,因此对矿床中伴生的分散元素研究有重要的理论和现实意义.利用常规显微镜观察、电子探针和等离子质谱分析手段,对四川天宝山铅锌矿床中矿物和矿石中的分散元素镉锗镓进行了分析研究.得出结论:分散元素镉锗镓在铅锌矿中的赋存状态是类质同像或机械混入物形式存在.分散元素镉、锗、镓的富集规律是:镉主要赋存于闪锌矿之中,锗和镓主要富集于方铅矿之中.