Geological features and prospecting significance of Changtiankeng talc deposit in Yongfeng County,Jiangxi Province

作者：Yongmin Li · 年份：2015 · 研究领域：Geochemistry and Geochronology of Asian Mineral Deposits、Geochemistry and Geologic Mapping、Geomechanics and Mining Engineering

The ore bodies as bedded,near bedded and lenticular shapes are hosted in the soapstone and limestone of fourth section of Triassic of Xiaojiangbian Fomation.According to degree of weathering,the ore bodies are divided into three types,such as weathering ore bodies,semi-weathering ore bodies and original ores.The ore minerals mainly are talc with same montmorillonite,kaolinite,quartz and a few ferric oxide,sericite,calcite,dolomite etc.The ores can be divided into primary talc ore and weathering-residual talc ore on the basis of the natural type and processing property of ores.Primary talc ore is characterized by microscopic banded and block structure.The weathering-residual talc ores are earthy and porous structure.The types of deposit are residual,transition and sedimentary type.The fourth and fifth sections of Xiaojiangbian Fomation of the middle Triassic are major prospecting markers.