| 稀土元素在残积景观剖面中的垂直分异与矿物组成的关系——以赣南富稀土地理景观为例 |
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| 引用本文： | 高效江,章申.稀土元素在残积景观剖面中的垂直分异与矿物组成的关系——以赣南富稀土地理景观为例[J].地理研究,1999,18(3):241-246. |
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| 作者姓名： | 高效江 章申 |
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| 作者单位： | 华东师范大学地理系 |
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| 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(20～63μm)≥细粉粒(2～20μm)>粘粒(<2μm)>沙粒(0.063～1mm)>石砾(>1mm).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。
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| 关 键 词： | 稀土元素 矿物组成 景观 |
| 文章编号： | 1000-0585(1999)03-0241-06 |
| 收稿时间： | 1998-04-07 |
| 修稿时间： | 4/7/1998 12:00:00 AM |
REE and its relation with the mineral fraction in a typical geographic landscape in Ganxian, Southern Jiangxi |
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| GAO Xiao jiang,ZHANG Shen,WANG Li jun,WANG Yu qi.REE and its relation with the mineral fraction in a typical geographic landscape in Ganxian, Southern Jiangxi[J].Geographical Research,1999,18(3):241-246. |
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| Authors: | GAO Xiao jiang ZHANG Shen WANG Li jun WANG Yu qi |
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| Institution: | 1. Department of Geography, East China Normall University Shanghai, 200062;2. Institute of Geography, CAS, Beijing 100101, China |
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| 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. |
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| Keywords: | rare earth elements (REE) mineral fraction geographic landscape |
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