广西古潭热水沉积重晶石矿床中硅质岩的地质-地球化学特征  

GEOLOGICAL AND GEOCHEMICAL CHARACTERISTICS OF SILICEOUS ROCK IN THE GUTAN HYDROTHERMALLY DEPOSITION BARITE DEPOSIT,GUANGXI

作　　者：陈大经 李毅[1] 谢世业[1] 尹意求[1] 

机构地区：[1]桂林矿产地质研究院,广西桂林541004

出　　处：《矿产与地质》2005年第5期461-464,共4页Mineral Resources and Geology

基　　金：广西科学基金资助项目(桂科基0236066)部分研究成果

摘　　要：广西古潭重晶石矿床中,与矿体密切伴生的硅质岩呈层状产出,具显微隐晶-细晶质结构、球粒结构,并具明显的层纹状构造及条带状构造,结合硅质岩岩石化学、稀土元素及硅同位素地球化学等的综合研究表明,硅质岩为热水沉积成因。The siliceous rocks closely associated with orebodies in the Gutan barite deposit of Guangxi occur in bedded form with microscopic cryptocrystalline- finely crystalline texture and ball texture, showing obvious laminated and bedded structure. The comprehensive study of siliceous rock chemistry, REE and silicon isotope geochemistry demonstrates that siliceous rocks are origin in hydrothermal deposition.

关 键 词：重晶石矿床 成因 硅质岩 岩石学-地球化学 热水沉积作用 广西古潭 

分 类 号：P619.251[天文地球—矿床学]