本文用现代的固体表面分析方法和连续选择性提取法对冕宁黑色风化物中稀土元素的赋存状态进行研究。在可交换离子相、易还原相、水成相和矿物结晶相四种稀土存在的形式中,易还原相和水成相是自然界矿物中新的稀土赋存状态。特性吸附是产生这两种新相的内在原因 In this paper, the modern solid surface analysis and continuous selective extraction of Mianning black weathering rare earth elements in the occurrence of state. In the forms of exchangeable ion phase, easy reduction phase, water phase and mineral crystal phase, four kinds of rare earth exist, the phase of reducible phase and water phase is the new state of rare earth in natural minerals. Characteristic adsorption is the intrinsic cause of these two new phases