摘要
大同煤盆地中广泛分布有沉积型高岭土矿,赋存层位主要为石炭系太原组和二叠系山西组,矿石类型主要为软质高岭土和硬质高岭土以及少量烧变高岭土.成矿物质主要来源于盆地周围的太古代古陆,在风化、生物和有机质成矿作用下,在陆相淡水中形成沉积型高岭土矿,高岭土和煤层形成在盆地相对稳定时期(两者沉积环境相似),即广阔的受水面积和舒缓的水力流泻环境.用X光、红外光谱对加温样品的分析表明,烧变高岭土的烧变温度为600～700℃.
There are extensive sedimentary kaolin minerals in the coal field of Datong,mainly in the Taiyuan formation of the Carbonic and the Shanxi formation of the Permian.The soft kaolin and hard kaolin with a few heated metakaolin belong to themain mineral type.Their industrial application lies in their high quality ceramic materials,fire resisting and other additional industrial material.These minerogenic materials,from Archaeozoic ancient mainland around the basin,are changed to the sedimentary kaolin in continental fresh water basin by weathering and the minerialization of organisms and organic matter. The kaolin and coal layers are formed in the basin during the static period(in the similar sedimentary environments)-the broad water receiving area and the slow hydraulic power flowing environments. The analysis results of heating samples by X-rays and infrared spectrum show that the metamorphic temperature of the heated metakaolin is between 600 ℃ and 700 ℃.
出处
《桂林工学院学报》
北大核心
2005年第2期146-151,共6页
Journal of Guilin University of Technology
基金
教育部跨世纪优秀人才培养计划资助项目(01037)
关键词
煤盆地
高岭土
沉积型
成矿作用
大同
山西
coal field
kaolin
sedimentary kaolin
minerialization
Datong
Shanxi
