Na-metasomatism and its contributions to REE enrichment in alkaline granite systems
文献类型：期刊论文
| 作者 | Zhnag Dong1,2; Yang Wubin1; Niu Hecai1 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2024-03-01 |
| 卷号 | 40期号:3页码:864-872 |
| 关键词 | Critical metals Alkali amphiboles Na-metasomatism REE and HFSE Na-index (Na-#) |
| ISSN号 | 1000-0569 |
| DOI | 10.18654/1000-0569/2024.03.10 |
| 英文摘要 | Alkaline igneous rock is one of the main sources of rare earth resources in the world, especially heavy rare earth resources. Until now, there is a lack of comprehensive and systematic research on key scientific questions such as the super-enrichment mechanism of rare earth (REE) and some high field strength elements (HFSE) in alkaline granite systems and their controlling factors. This paper focuses on Na-metasomatism in the alkaline magmatic-hydrothermal systems, and discusses the mineral replacement reaction processes and the remobilization and migration processes of rare earth elements in the hydrothermal replacement processes, such as albitization, arfvedsonization and aegirinization. In alkaline systems, alkali amphiboles and pyroxenes are considered to be the significant carriers of REE and HFSE, and are also effective tracers of magmatic differentiation and evolution. Taking the Nianzishan alkaline granite in NE China as an example, the late magmatic-hydrothermal metasomatism will lead to the evolution of alkali amphibole and pyroxene from calcium-rich minerals to sodium-rich mineral phases, which will lead to the remobilization and transferring of REE and HFSE in the late hydrothermal stage. In particular, REE and HFSE would be released into the metasomatic fluids, which may be the key controlling factors leading to the super-enrichment and mineralization of these key metal elements in the late hydrothermal stage. Therefore, the sodium index [Na-#=Na/(Na+Ca) molar ratio] of the alkali amphiboles and pyroxenes may be a potential mineral geochemical index, which will provide a new proxy for REE exploration in the alkaline-peralkaline plutons. |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001208071000010 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/77006]  |
| 专题 | 中国科学院矿物学与成矿学重点实验室 |
| 通讯作者 | Yang Wubin |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangdong Prov Key Lab Mineral Phys & Mat, Guangzhou 510640, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhnag Dong,Yang Wubin,Niu Hecai. Na-metasomatism and its contributions to REE enrichment in alkaline granite systems[J]. ACTA PETROLOGICA SINICA,2024,40(3):864-872. |
| APA | Zhnag Dong,Yang Wubin,&Niu Hecai.(2024).Na-metasomatism and its contributions to REE enrichment in alkaline granite systems.ACTA PETROLOGICA SINICA,40(3),864-872. |
| MLA | Zhnag Dong,et al."Na-metasomatism and its contributions to REE enrichment in alkaline granite systems".ACTA PETROLOGICA SINICA 40.3(2024):864-872. |
入库方式： OAI收割
来源：广州地球化学研究所
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