摘要
在浏阳永和浅海相沉积型海泡石矿床中,海泡石与滑石密切共生,二者或同层出现,或相间出现。即或在单独存在的海泡石矿体和滑石矿体,也属相同时代,相同层位,并伴生同种生物组合。通过X—射线衍射分析、红外光谱分析及电镜分析结果表明,海泡石矿物与滑石矿物之间存在着相互转换的关系,滑石是由海泡石在成岩过程中转化而来的。
In the sedimentary-type scpiolitc deposits of shallow-sea facics,as represented by Yonghe deposit in Liuying district, the scpiolitc had a close paragcnctic relation with the talc,showing coexistence, or occurrence individually,and or inter-stratified appearance of scpiolitc layer and talc layer. Both scpiolitc deposits and talc deposits without scpiolitc mineral were all developed in the same geologic age, the same stratum and the same scdimcnttary and tectonic environments , and accompanycd with the same type of bio-logicad association. Studies by X-diffraction,infrared spcctrography ,differential thermal analysis and electron-probe microscopy show that there existed a mutual transformation between the scpiolitc and the tale. The scpiolitc was transformed into the talc in the process of diagcncsis.
关键词
海泡石矿床
滑石
矿物学
scpiolitc, talc, mutual transformation, Liuyang, Hunan Province
