内蒙古东升庙多金属硫化物矿床深部氧化淋滤泥微粒研究  

Research on Particles of the Deep Oxidation Leaching Zone of the Dongshengmiao,Inner Mongolia Polymetallic Sulfide Deposit

作　　者：王正阳[1] 曹建劲[1] 吴政权[1] 林祖旭 

机构地区：[1]中山大学地球科学系广东省地质过程与矿产资源探查重点实验室,广州510275

出　　处：《矿物岩石地球化学通报》2015年第2期349-353,共5页Bulletin of Mineralogy, Petrology and Geochemistry

基　　金：国家自然科学基金项目(41030425;41072263;40773037;40673044);国家高技术研究发展计划项目(2008AA06Z101)

摘　　要：内蒙古东升庙多金属硫化物矿床深部裂隙带中发育有氧化及水溶液淋滤作用产生的氧化淋滤泥,从微粒的角度研究这些氧化淋滤泥的组分特征及其形成过程可以反映矿床内部的氧化作用和次生变化,从而进一步的研究矿床内部氧化还原环境的演变特征,对矿山环境恢复和治理工作起到一定程度的指示作用。采集矿床内部不同部位的氧化淋滤泥样品,使用扫描电镜(SEM)对样品内部微粒进行分析测试。结果显示矿床内部氧化淋滤泥主要由铁镁等金属的硫酸盐微粒、黏土矿物微粒和石膏微粒组成,另外还含有极少量的氧化铁微粒,不同部位样品的组分和微粒特征也略有差异。研究表明该矿床氧化淋滤带内多种矿物经历了复杂的后生氧化淋滤作用,矿床内部不同部位环境也有所差异,而这些特征和差异可以反映出矿床内部重金属的迁移规律和矿山环境的变迁情况。The oxidized and leached mud had been found in the deep fracture zone of the Dongshengmiao polymetallic sulfide deposit, Inner Mongolia. Researches on the oxidized and leached mud from the perspective of particle can reflect the oxidation and the secondary changes of the sulfide minerals in the deposit, thereby, can reflect the evolution of the oxidizing environment in the deposit and can help in controlling and rehabilitating the mine environment. Scanning electron microscope study of the oxidized and leached mud showed that samples are mainly composed by metal sulphate particles, clay mineral particles and gypsum particles, as well as a small quantity of iron oxide particles. Samples in different positions are slightly different in elements compositions and other characteristics. Research showed that minerals in the oxidation leaching zone of the deposit experienced complicated epigenetic oxidation and leaching, and that the different clay minerals in different positions of the deposit indicated the different environments. These characteristics reflect the migration of the heavy metals in the deposit and the environment change of the mine.

关 键 词：多金属硫化物矿床 微粒 氧化作用 淋滤作用 扫描电镜 东升庙 

分 类 号：P618.2[天文地球—矿床学]