山东微山稀土矿床的稀土矿物学研究

Rare earth mineralogy study of Weishan rare earth deposit in Shandong Province

微山稀土矿是山东唯一的中型稀土矿床,是中国第三大轻稀土矿床,也是山东正在开采的稀土矿床之一,为与碱性侵入岩有关的中-低温热液型矿床。以往对该稀土矿的流体演化、包裹体特征、成因、成矿年龄等研究较多,但对稀土矿的矿物学研究较少。本次利用电子探针对矿床赋存的氟碳铈矿、氟碳钙铈矿、碳酸锶铈矿、菱钙锶铈矿、铈磷灰石等稀土矿物进行了较详细的矿物学及化学成分研究。

Weishan rare earth deposit is the only medium-sized rare earth deposit in Shandong province.It is the third largest light rare earth deposit in China,and one of the rare earth deposits being mined in Shandong province.It is a medium-low temperature hydrothermal deposit related to alkaline intrusive rocks.In the past,the fluid evolution,inclusion characteristics,genesis and metallogenic age of the rare earth deposit have been studied more,but the mineralogical study of the rare earth deposit is less.In this paper,the mineralogy and chemical composition of rare earth minerals,such as fluorocarbon-cerium ore,fluorocarbon-calcium-cerium ore,strontium-cerium carbonate ore,cerium apatite and cerium monazite in rare earth deposits have studied in detail by means of electron probe.