一、引言 目前,国内外已经发现不少含稀土元素的沉积矿床。就国内来说,最为典型的是吉林大栗子的临江式铁矿,矿床赋存于震旦系细河统钓鱼台组的地层内,为富含稀土元素的铁硅酸盐和碳酸盐建造,稀土元素主要呈被吸附状态存在于赤铁矿中。此外,尚可见到少 I. Introduction At present, many rare earth deposits have been found in China and abroad. At home, the most typical is the Linjiang-type iron ore from Jilin’s big chestnuts. The deposits are found in the strata of the Diaoyutai Formation in the Sinian and are rich in REE-rich ferrosilicates and carbonates , Rare earth elements were mainly adsorbed in the presence of hematite. In addition, you can still see less