叶蜡石的热物理特性研究  

A STUDY OF THERMCPHYSICAL CHARACTERISTIC OF PYROPHYLLITE

作　　者：陈大梅[1] 姜泽春[1] 张惠芬[1] 

机构地区：[1]中国科学院地球化学研究所,贵阳550002

出　　处：《矿物岩石》1991年第1期45-50,共6页Mineralogy and Petrology

摘　　要：叶蜡石是一种层状硅酸盐矿物,它的热物理特性主要取决于化学成分和共生矿物组合。较纯的叶蜡石热膨胀系数较小,而含石英较多的叶蜡石膨胀系数明显增大。叶蜡石相对热辐射率较低。它的共生矿物的差异影响结构破坏的温度,在加热到1000℃后的X射线粉晶衍射图上,出现了较弱的莫耒石和方英石的特征谱线,1200℃后特征谱线较明显。Pyrophyllite is a very widely used bedding silicate mineral. The thermophysical characteristic depends mainly on the chemical composition and the paragenetic minaral assoclation. The thermal expansion coefficient of the pure pyrophyllite is relatively small, and that of the pyrophyllite certaining more quartz quite clearly increases. The relative heat radiation rate of pyrophyllite is fairly low. The difference of minerals associatec with pyrophyllite effects the temperature of textural destruction. After heating to 1000℃, the weak spectral-line of mullite and cristobalite appears in the X-ray powder diffraction diagram, and after 1200℃, the spectral-line is relatively strong.

关 键 词：叶蜡石 热膨胀 热辐射 

分 类 号：P578.958[天文地球—矿物学]