【摘要】 选择赣南稀土矿区典型地理景观， 主要研究了表生作用过程中稀土元素与矿物组成的关系。结果表明景观中稀土元素的含量分布与土体的机械组成密切相关。不同粒级组分中稀土元素的含量有以下序列： 粗粉粒 （２０～６３ μｍ ） ≥细粉粒 （２～２０ μｍ ） ＞ 粘粒 （＜ ２ μｍ ） ＞ 沙粒（００６３～１ ｍ ｍ ） ＞ 石砾 （＞ １ ｍ ｍ ）。石英和长石对稀土元素起稀释的作用， 高岭石、埃洛石等次生层状硅酸盐矿物对稀土元素具有吸附富集作用， 重矿物对稀土元素分布也有一定的影响。更多还原

【Abstract】 Rare earth elements and its relation with the mineral fraction in a typical geographic landscape in the REE mining area in Ganxian, southern Jiangxi, were studied. The results showed that the REE content and the distribution are closely related to soil texture and mineral composition. REE are enriched in the 2~63 μm fractton, and the sequence of REE contents in different size fraction is: 20~63 μm≥2~20 μm>-2 μm>0 063~1 mm>+1 mm. Analysis of minerals suggested that quatze and feldspar can dilute REE, secondary minerals (e.g. Kolinite) can enrich REE, and heavy mineral is also one of the factors affecting REE distribution.更多还原