中国萤石矿床稀土元素地球化学及萤石的矿物物理特征

中国萤石矿床分为花岗岩，火山岩及沉积岩的３种类型。萤石中稀土总量依上述顺序降低，ＬＲＥＥ／ＨＲＥＥ值依次增加。萤石的稀土配分与围岩相似。在Ｍｏｌｌｅｒ等图中，３各萤石处于不同的区域内，表明该类低温液型萤石只与围岩岩性有关。在ＢａｒｂｉｅｒＡｌｌｅｇｒｅｅ以及Ｍｏｌｌｅｒ等图中，所有沉只岩中的萤石都落入世界范围的沉积岩区，说明成矿作用与沉积作用密切相关，３种萤石中，不同的稀土含量具有不同的喇曼光岩区

GEOCHEMISTRY OF REE OF FLUORITE DEPOSITS AND PHYSICAL PROPERTIES OF FLUORITE MINERAL IN CHINA

Fluorite deposits in China have been divided into three types and enriched in granites,volcanic and sedimentary rocks respectively. The REE abundance of fluorite decrease in the order of granite,volcanic rocks and sedimentary rocks, but LREE/HREE ratios of fluorite increase in the order of above mentioned rocks. The REE distribution is similar to that of the wall rocks. In the diagram of Moller,the three types of fluorite are located in different sections,showing that fluorite in epigenetic hydrothermal deposit is only related to the lithological properties of the wall rocks. In the diagrams of Moller,Bar-bier and Allegree,fluorite in all sedimentary rocks are located in the sedimentary scope in the world,showing that mineralization of fluorite deposit is closely related to the sedimentation. Different REE abundance in three types of fluorite has caused different Raman spectrum,TL curves and cathodoluminescent spectrum.