白云鄂博萤石分布特征及放射性钍元素的影响

Distribution Characteristics of Fluorite and Effects of Radioactive Element Thorium in Bayan Obo Deposit

萤石在白云鄂博矿区分布广泛。因各矿段萤石矿化程度不同,将其划分为"四个矿化阶段"。借助显微镜、XRD及SEM研究了各矿化阶段萤石的分布特征,证明了放射性元素钍使得萤石呈现"非均质"的光学性质,也对其"钪化现象"产生了直接影响。

The fluorite is widely distributed in the mining area of Bayan Obo. Its degrees of mineralization are different for each ore block,so it is classified as"four generations". The distribution characteristics of fluorite in different generations are studied by means of microscope,XRD and SEM,which prove that the radioactive element Th makes fluorite with the optical property of anisotropism and it has direct influence on the replacement of Ca with Sc.