Carbonatite-related delicate REE mineralization processes revealed by fluorocarbonates and monazite: Insights from the giant Bayan Obo REE-Nb-Fe deposit, China
文献类型：期刊论文
| 作者 | Liu, Shang2,3,4; Fan, Hong-Rui1,4,5; Wang, Qi-Wei4; Liu, Yan-Jiang4; Wei, Wei4 |
| 刊名 | ORE GEOLOGY REVIEWS
 |
| 出版日期 | 2023-06-01 |
| 卷号 | 157页码:30 |
| 关键词 | REE mineralization Fluorocarbonates Monazites In situ geochemistry Carbonatite-related REE deposit |
| ISSN号 | 0169-1368 |
| DOI | 10.1016/j.oregeorev.2023.105443 |
| 英文摘要 | Fluorocarbonates and monazite are common economic REE minerals in carbonatite-related REE deposits, such as the largest known REE deposit at Bayan Obo, China. The geochemical evolution of REE minerals is a sensitive and effective indicator of delicate REE mineralization processes. In this study, the fluorocarbonates and mona- zites were classified into three generations, corresponding to three REE mineralizing stages. The first generation (Gen-1) of bastna center dot site and monazite are generally characterized by elevated La/Ce, La/Nd and La/Lu ratios, with right-declining chondrite normalized REE distribution patterns. They have low Th and radiogenic Sr content, with forming age of about 1.3 Ga and epsilon Nd(t) around 0, indicating a primary origin and orthomagmatic crys- tallization from carbonatite melts. The second generation (Gen-2) of REE minerals, formed at 1.25-1.2 Ga, normally constitute banded aggregates with associated hydrothermal gangue minerals (fluorite, aegirine, sodium amphibole etc.). The Gen-2 REE minerals are featured by moderate-low La/Ce, La/Nd, La/Lu ratios but slightly elevated87Sr/86Sr0 ratios, indicating a Mesoproterozoic hydrothermal origin related to carbonatitic fluids. Gen-2 bastna center dot site and monazite precipitated earlier in low-fluid/rock-ratio environment with right-declining LREE distribution patterns, while the subsequent Gen-2 parisite and huanghoite display convex LREE patterns and higher OH/F ratios, indicative of relative La-depletion and increased ambient fluid/rock ratios during progres- sive hydrothermal REE mineralization. The third generation (Gen-3) of REE minerals are generally megacrysts in the vein-type ores formed in the early Paleozoic REE mineralization stage (470-420 Ma). The Gen-3 REE min- erals are typified by significantly variable REE, Sr and Nd isotopic components, indicating extensive hydro- thermal metasomatism and intense contamination of crustal material. Induced by activities of early Paleozoic subduction-related fluids, Gen-3 REE minerals were formed through local REE re-enrichment within the ore - hosting dolomite, rather than by introduction of REE from external sources. In this case study, a comprehen- sive model of the delicate REE mineralization processes of the giant Bayan Obo REE-Nb-Fe deposit has been established. This study highlights the great potential of fluorocarbonates and monazites widely distributed in carbonatite-related REE deposits as universal geochemical indicators of late-stage evolution of carbonatite and delicate magmatic-hydrothermal REE mineralization processes. |
| WOS关键词 | RARE-EARTH MINERALIZATION ; ZIRCON U-PB ; LA-ICP-MS ; INNER-MONGOLIA ; ORE-DEPOSIT ; SM-ND ; TRACE-ELEMENTS ; ISOTOPIC COMPOSITIONS ; DOLOMITE CARBONATITE ; SICHUAN PROVINCE |
| 资助项目 | National Natural Science Foundation of China[41902066] ; National Natural Science Foundation of China[41930430] ; Fundamental Research Funds for the Central Universities[lzujbky-2021-7] ; Open Research Program of the State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization[2021Z2360] ; Joint Research Program of the State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization[2021Z2272] |
| WOS研究方向 | Geology ; Mineralogy ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:000988674300001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Open Research Program of the State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization ; Open Research Program of the State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization ; Joint Research Program of the State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization ; Joint Research Program of the State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Open Research Program of the State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization ; Open Research Program of the State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization ; Joint Research Program of the State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization ; Joint Research Program of the State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Open Research Program of the State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization ; Open Research Program of the State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization ; Joint Research Program of the State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization ; Joint Research Program of the State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Open Research Program of the State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization ; Open Research Program of the State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization ; Joint Research Program of the State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization ; Joint Research Program of the State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/110969]  |
| 专题 | 地质与地球物理研究所_中国科学院矿产资源研究重点实验室 |
| 通讯作者 | Liu, Shang |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 2.Lanzhou Univ, Key Lab Mineral Resources Western China Gansu Prov, Lanzhou 730000, Peoples R China 3.Lanzhou Univ, Sch Earth Sci, Lanzhou 730000, Peoples R China 4.Baotou Res Inst Rare Earths, State Key Lab Baiyunobo Rare Earth Resource Res &, Baotou 014030, Peoples R China 5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Shang,Fan, Hong-Rui,Wang, Qi-Wei,et al. Carbonatite-related delicate REE mineralization processes revealed by fluorocarbonates and monazite: Insights from the giant Bayan Obo REE-Nb-Fe deposit, China[J]. ORE GEOLOGY REVIEWS,2023,157:30. |
| APA | Liu, Shang,Fan, Hong-Rui,Wang, Qi-Wei,Liu, Yan-Jiang,&Wei, Wei.(2023).Carbonatite-related delicate REE mineralization processes revealed by fluorocarbonates and monazite: Insights from the giant Bayan Obo REE-Nb-Fe deposit, China.ORE GEOLOGY REVIEWS,157,30. |
| MLA | Liu, Shang,et al."Carbonatite-related delicate REE mineralization processes revealed by fluorocarbonates and monazite: Insights from the giant Bayan Obo REE-Nb-Fe deposit, China".ORE GEOLOGY REVIEWS 157(2023):30. |
入库方式： OAI收割
来源：地质与地球物理研究所
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