黑色风化物的物理化学性质及稀土配分研究

Study on Physicochemical Properties and Rare Earth Distribution Patterns in Blak Weathered Earth

某稀土矿产生的黑色风化物，是一种稀土以胶态相赋存的新稀土资源。黑色风化物主要由锰、铁，稀土和铅组成，形成锰铁氧化物非晶质的高聚合度无机高分子。黑色风化物强烈地选择铈族轻稀土，与矿区产的矿石和氟碳铈矿稀土配分相近，但黑色风化物含中重稀土最高，矿石次之，氟碳铈矿最低。

The black weathered earth of the southwest rare earth ore in China is a kind of new rare earth resources which is a RE mineral of colloidal state. It mainly consists of Mn, Fe,RE and Pb,and forms Mn-Fe oxide. It is a amorphous inorganic high molecule polymer. Light rare earth of Cerium family is strongly chosen by the black weathered earth. Rare earth distribution patterns of the black weathered earth are similar to those of original ore and bastnaesite. However, the middle and heavy rare earth conent is maximum in the black weathered earth, median in the original ore and minimum in bastnaesite. respectively.