内蒙古大井矿床中银矿物的研究  

Study on the Silver Minerals of Dajing Deposit,Inner Mongolia

作　　者：王玉往[1] 王京彬[1] 王莉娟[1] 毛骞[1] 姜能[1] 

机构地区：[1]中国科学院地质与地球物理研究所

出　　处：《地质论评》2002年第5期526-533,T002,共9页Geological Review

基　　金：中国科学院知识创新项目(编号 KZCX1-07);"973"项目(编号 2001CB409806)

摘　　要：本文总结了内蒙古大井矿床中银矿物的类型、产出特征以及矿物命名的问题,详细描述了黝铜矿族、浓红银矿、脆银矿、自然银以及含银的铅-铋(锑)硫盐类矿物等主要银矿物的产出状态和化学成分特征,并讨论了相应的形成条件。同时指出本区银矿物主要形成于两个矿化阶段,即,早期黄铜矿-黄铁矿阶段,主要形成了黝铜矿族的含银矿物以及辉锑银矿、硫锑铜银矿等含铜的硫盐类矿物;晚期方铅矿-闪锌矿阶段,形成的银矿物种类较为繁杂,除形成黝铜矿族矿物外,多数含铅、铋的硫盐矿物以及自然银、硫化物和浓红银矿、脆银矿等无铜的简单硫盐等均是在这一阶段形成。The types and occurrence of silver minerals in Dajing ore deposit are summarized in this paper. The most particular description is facused on the occurrences and chemical compositions for such main silver minerals as tetrahedrite group, pyrargyrite, stephanite, nature silver and silver-bearing Pb-Bi (Sb)-sulfosalt, while the respective forming conditions are also discussed here. It is considered that these silver minerals deposited in two mineralization stages. Mostly Ag-bearing tetrahedrite group and such Cu-bearing sulfosalts as miargyrite, polybasite formed in the earlier chalcopyrite-pyrite stage, and another Ag-bearing minerals (or silver minerals) including some tetrahedrite group, Pb-bearing Bi-sulfosalt, nature silver, sulfides and Cu-less sulfosalts like pyrargyrite and stephanite formed in the later galena-sphalerite stage.

关 键 词：银矿物 化学成分 大井矿床 内蒙古 形成条件 类质同象替代 硫化物 

分 类 号：P618.5[天文地球—矿床学]