IGGCAS OpenIR  > 岩石圈演化国家重点实验室
Mobilization and fractionation of HFSE and REE by high fluorine fluid of magmatic origin during the alteration of amphibolite
Li, Zhen-Xin1; Zhang, Shao-Bing1,2,3; Zheng, Yong-Fei1,2,3; Wu, Shi-Tou4; Li, Wan-Cai1,2,3; Sun, Fang-Yuan1; Liang, Ting1
2022-07-01
Source PublicationLITHOS
ISSN0024-4937
Volume420Pages:17
AbstractHigh field strength elements (HFSE) and rare earth elements (REE) are normally immobile in hydrothermal fluids whereas experimental studies indicate some anionic ligands can significantly enhance their solubility in hydrothermal fluids. However, the role of fluorine (F) in hydrothermal fluids revealed by experiments and natural samples is different or even contradictory, especially in the mechanism of elements mobilization and fractionation. Here, we report a field-based geochemical study of amphibolites with extremely high Nb/Ta ratios (up to 98.7) and enriched HREE concentrations. The Paleoproterozoic amphibolites are intruded by a granitic dike with zircon U-Pb age of 132 +/- 3 Ma. Felsic veinlets are observed in thin-sections of the amphibolite. Biotites with high F contents occur as aggregates along the boundary between the felsic veinlets and amphiboles, which indicates they are formed by reaction between amphibole and the granitic melt. The amphiboles have core-mantlerim structure with high F actinolitic mantle surrounding low F magnesio-hastingsitic core. Some actinolites intergrow with biotites, titanites and magnetites. These evidences indicate that the actinolites are produced by hydrothermal metasomatism or interface-coupled dissolution-precipitation. The metasomatism occurred at 0.3-0.9 kbar and 500-650 degrees C within the hornfels facies. Hydrothermal titanites from amphibolites yield a lower intercept age of 131 +/- 4.3 Ma, which is consistent with the crystallization age of the granitic dike. These observations indicate that the fluids are derived from fractional crystallization of a felsic magma for diking, and the released fluids are channeled along the interface between dike and amphibolite. The metasomatic minerals show high F and no Cl contents, indicating the hydrothermal fluids are high in fluorine (0.04-0.12 wt%) and low in chlorine. The F contents of minerals negatively correlate with HFSE, REE contents and (La/Yb)N ratios, but positively with Nb/Ta ratios. These reveal the progressive leaching and fractionation of HFSE and REE by the hydrothermal fluids. Mass balance estimates that most trace elements lose 20-60% during the hydrothermal alternation of amphibole. The calculation results also reveal that more Ta and LREE are lost than Nb and HREE, indicating Ta and LREE are more soluble than Nb and HREE, respectively, in the hydrothermal fluids. All these observations suggest that HFSE and REE are not only mobilized but also fractionated because of different degrees of mobilization by fluoride-bearing fluids.
KeywordHFSE REE Amphibole Titanite Fluid metasomatism Fluorine
DOI10.1016/j.lithos.2022.106701
Funding OrganizationNational 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 ; 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 ; 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 ; 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
WOS KeywordFIELD-STRENGTH-ELEMENTS ; RARE-EARTH-ELEMENTS ; NORTH CHINA CRATON ; IN-SITU ANALYSIS ; A-TYPE GRANITES ; TRACE-ELEMENTS ; HYDROTHERMAL MOBILIZATION ; AQUEOUS FLUIDS ; TITANIAN PARGASITE ; CRUSTAL GROWTH
Language英语
Funding ProjectNational Natural Science Foundation of China[41973002] ; National Natural Science Foundation of China[41772187] ; Fundamental Research Funds for the Central Universities
Funding OrganizationNational 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 ; 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 ; 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 ; 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
WOS Research AreaGeochemistry & Geophysics ; Mineralogy
WOS SubjectGeochemistry & Geophysics ; Mineralogy
WOS IDWOS:000803927300002
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/106016
Collection岩石圈演化国家重点实验室
Corresponding AuthorZhang, Shao-Bing
Affiliation1.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Peoples R China
2.Chinese Acad Sci, Ctr Excellence Comparat Planetol, Hefei 230026, Peoples R China
3.Univ Sci & Technol China, Frontiers Sci Ctr Planetary Explorat & Emerging Te, Hefei 230026, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
Recommended Citation
GB/T 7714
Li, Zhen-Xin,Zhang, Shao-Bing,Zheng, Yong-Fei,et al. Mobilization and fractionation of HFSE and REE by high fluorine fluid of magmatic origin during the alteration of amphibolite[J]. LITHOS,2022,420:17.
APA Li, Zhen-Xin.,Zhang, Shao-Bing.,Zheng, Yong-Fei.,Wu, Shi-Tou.,Li, Wan-Cai.,...&Liang, Ting.(2022).Mobilization and fractionation of HFSE and REE by high fluorine fluid of magmatic origin during the alteration of amphibolite.LITHOS,420,17.
MLA Li, Zhen-Xin,et al."Mobilization and fractionation of HFSE and REE by high fluorine fluid of magmatic origin during the alteration of amphibolite".LITHOS 420(2022):17.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Li, Zhen-Xin]'s Articles
[Zhang, Shao-Bing]'s Articles
[Zheng, Yong-Fei]'s Articles
Baidu academic
Similar articles in Baidu academic
[Li, Zhen-Xin]'s Articles
[Zhang, Shao-Bing]'s Articles
[Zheng, Yong-Fei]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Li, Zhen-Xin]'s Articles
[Zhang, Shao-Bing]'s Articles
[Zheng, Yong-Fei]'s Articles
Terms of Use
No data!
Social Bookmark/Share
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit Add to Technorati
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.