摘要
辽宁金伯利岩中的碳硅石与金刚石密切共生,具有颜色鲜艳、硬度大、蚀象发育、富含基性元素等特征,可作为金刚石找矿的矿物学标志。它与人造碳化硅区别明显,在晶体结构上前者以α—SiCⅡ型为主,后者则以α—SiCⅠ型为主;前者富台基性元素Cr、Ni、Co、V、Ti等,后者富含Mg、Al;前者蚀象发育,后者则无蚀象。在半导体性能上,前者以空穴型为主,后者以屯予型为主。
Moissanite closely coexisted with diamond in kimberlite are characterized by bright-coloured,high hardnees,well-developed etched figure and basic element-rich, which can be used as the sign of prospecting for diamond.It is obviously different from artificial silicon carbide:in crystal structure,the former dominated by α-SiCⅡ type but the latter α-SiC I type;the former rich in basic elements such as Cr,Ni, Co,V,Ti but the latter rich in Mg and Al;the former well-developed etched figure but the latter absent etched figure;in the semiconductor performance,the former mainly being of hole-type but the former mainly being of electronic-type.
关键词
金伯利岩
碳硅石
辽宁
性质
Kimberlite
Moissanite
Silicon carbide
Liaoning
