Sulfur isotopes of carbonatite from the giant Maoniuping REE deposit, SW China
文献类型：期刊论文
| 作者 | Weng, Qiang3; Yang, Wu-Bin1,2,4; Niu, He-Cai1,4; Li, Ning-Bo1,4; Shan, Qiang1,4 |
| 刊名 | ORE GEOLOGY REVIEWS
 |
| 出版日期 | 2023-11-01 |
| 卷号 | 162页码:12 |
| 关键词 | Carbonatite Sulfur isotopes Barite and galena Source and processes Giant Maoniuping REE deposit |
| ISSN号 | 0169-1368 |
| DOI | 10.1016/j.oregeorev.2023.105694 |
| 英文摘要 | Sulfur is an indispensable volatile component, which generally occurs as both sulfides and sulfates in global carbonatite-hosted REE deposits. In this study, we present mineral chemistry and sulfur isotopes of the associated sulfides and sulfates from carbonatite of different settings in the giant Maoniuping REE deposit, SW China, to decipher the magmatic-hydrothermal ore-forming processes. The early-stage carbonatite (stage-I) is barely REE mineralized, with sulfide-dominated sulfur species and melt inclusions in barite. The middle-stage carbonatite (stage-II) is weakly mineralized, with both sulfides and sulfates and barite with melt-fluid inclusions. The latestage carbonatite (stage-III) is intensively REE mineralized, with sulfate-dominated sulfur species and fluid inclusions in barite. Barite from the early- to late-stage carbonatites show a progressively 34S-enriched signature (834S = +1.93%o to +8.10%o), whereas, galena has an increasing 32S-enriched trend (834S = -3.54%o to -16.73%o). The estimated bulk 834S values show an increasing from +0.31 %o to +1.06 %o, and then decrease to -0.08 %o, from the early- to late-stage carbonatites. Principally, these sulfur isotopic shifts may be controlled by the temperature dependence of the sulfur isotope fractionation between crystallizing sulfides/sulfates and magma, but it is dominated by the increasing oxidation state and intensively SO2 degassing of the residual magma in later stages. Mass-balance calculation indicates that more than 45% of gaseous sulfur has been degassed, with about 20 % of gaseous sulfur remaining in the late hydrothermal system. Such post-magmatic SO2 degassing and high SO42- activity may be the crucial controlling factors leading to the instability of REE complexes and REE precipitation and mineralization from the REE-bearing hydrous system. |
| WOS研究方向 | Geology ; Mineralogy ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:001084150100001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/78719]  |
| 专题 | 中国科学院矿物学与成矿学重点实验室 |
| 通讯作者 | Yang, Wu-Bin |
| 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.Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China 3.Kunming Univ Sci & Technol, Fac Land Resource Engn, Kunming 650093, Peoples R China 4.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Weng, Qiang,Yang, Wu-Bin,Niu, He-Cai,et al. Sulfur isotopes of carbonatite from the giant Maoniuping REE deposit, SW China[J]. ORE GEOLOGY REVIEWS,2023,162:12. |
| APA | Weng, Qiang,Yang, Wu-Bin,Niu, He-Cai,Li, Ning-Bo,&Shan, Qiang.(2023).Sulfur isotopes of carbonatite from the giant Maoniuping REE deposit, SW China.ORE GEOLOGY REVIEWS,162,12. |
| MLA | Weng, Qiang,et al."Sulfur isotopes of carbonatite from the giant Maoniuping REE deposit, SW China".ORE GEOLOGY REVIEWS 162(2023):12. |
入库方式： OAI收割
来源：广州地球化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。