内蒙古锡林郭勒盟阿巴嘎旗李瑛萤石矿流体性质、成矿物质来源:微量、稀土元素地球化学证据内蒙古锡林郭勒盟阿巴嘎旗李瑛萤石矿流体性质、成矿物质来源:微量、稀土元素地球化学证据-Properties of ore-forming fluids and sources of ore-forming materials of Liying Fluorite Deposit in Abag Banner, Xilingol League, Inner Mongolia: Evidence from Trace and Rare Earth Element geochemistry