| Hydrothermal Redistribution of Rare—Earth Elements in Pingxiang Dacite,Guangxi |
| |
| 引用本文： | 顾尚义,万国江,毛健全,张启厚. Hydrothermal Redistribution of Rare—Earth Elements in Pingxiang Dacite,Guangxi[J]. 中国地球化学学报, 2002, 21(2): 170-174. DOI: 10.1007/BF02873775 |
| |
| 作者姓名： | 顾尚义 万国江 毛健全 张启厚 |
| |
| 作者单位： | [1]StateKeyLaboratoryofEnvironmentalGeochemistry,InstituteofGeochemistry,ChineseAcatlemyofSciences,Guiyang550002,China [2]GuizhouUniversityofTechnology,Guiyang550003,China |
| |
| 摘 要： |
|
| 关 键 词： | REE 热液作用 稀土元素 地球化学 广西 分布特征 萍乡市 |
Hydrothermal redistribution of rare-earth elements in Pingxiang Dacite, Guangxi |
| |
| Gu Shangyi,Wan Guojiang,Mao Jianquan,Zhang Qihou. Hydrothermal redistribution of rare-earth elements in Pingxiang Dacite, Guangxi[J]. Chinese Journal of Geochemistry, 2002, 21(2): 170-174. DOI: 10.1007/BF02873775 |
| |
| Authors: | Gu Shangyi Wan Guojiang Mao Jianquan Zhang Qihou |
| |
| Affiliation: | (1) State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 550002 Guiyang, China;(2) Guizhou University of Technology, 550003 Guiyang, China |
| |
| Abstract: | Distribution of the rare-earth elements (REE) in dacite has been studied so as to get a better understanding of the migration behavior of REE during alteration. Both unaltered and altered samples were collected in an unpolluted area of Guangxi Zhuang Autonomous Region, southwest China. The REE concentrations were analyzed by ICP-MS. It is concluded that the REE were enriched during dacite alteration in varying degrees. The chondrite-normalized REE patterns of altered samples approximately maintain the characteristics of unaltered samples. However, if we normalize the REE concentrations of altered samples with unaltered dacite, fractionation of REE will appear. The LREE are more enriched than HREE in all altered samples with the LREE possibly precipitated as carbonate minerals. Both positive and negative Eu anomalies exist. Enrichment, immobility and depletion are noticed for the element Lu. Heavy mineral alteration, difference in stability constant between carbonate LREE and HREE complexes, downward migration of weathering fluid and microenvironment change may be responsible for the fractionation of REE in the altered dacite. |
| |
| Keywords: | rare-earth elements hydrothermal alteration dacite Pingxiang |
| 本文献已被 维普 万方数据 SpringerLink 等数据库收录！ |
|
