钍石的新变种——铅钍石  

NEW VARIETY OF THORITE——PLUMBOTHORITE

作　　者：严春杰[1] 杨光明[1] 张素新[1] 

机构地区：[1]中国地质大学测试中心

出　　处：《地质科技情报》1997年第2期29-31,共3页Geological Science and Technology Information

基　　金：国家教委博士点基金

摘　　要：铅钍石是钍石的新变种，属首次发现。其ＰｂＯ含量达９．０４％，由此引起其性质的变化，如比重、硬度、折光率和晶胞参数均小于铀钍石。The plumbothorite discovered for the first time is a new variety of thorite.Its content of PbO amounts to 9 04%,Which leads to a series of changes in properties,such as specific gravity、hardness、refractive index and crystal cell parameter are all less than uranothorites.According to the infrared absorbent line we can identify the degree of its metamictization.

关 键 词：铅钍石 重晶霓辉伟晶岩 钍石 变种 

分 类 号：P578.926[天文地球—矿物学]