Fe Isotopic Compositions of Modern Seafloor Hydrothermal Systems and Their Influence Factors
Based on previous research on the Fe isotope compositions of various components and systems of the Earth, this study focused on the Fe isotope compositions of hydrothermal systems, including the Fe isotope variations in chalcopyrite, pyrite, and sphalerite, and their possible controlling factors. Th...
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Wiley
2017-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2017/1417302 |
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| author | Xiaohu Li Jianqiang Wang Hao Wang |
| author_facet | Xiaohu Li Jianqiang Wang Hao Wang |
| author_sort | Xiaohu Li |
| collection | DOAJ |
| description | Based on previous research on the Fe isotope compositions of various components and systems of the Earth, this study focused on the Fe isotope compositions of hydrothermal systems, including the Fe isotope variations in chalcopyrite, pyrite, and sphalerite, and their possible controlling factors. The main findings are as follows: (1) The range of Fe isotopes in hydrothermal systems at mid-ocean ridge is very large. The δ56Fe values of hydrothermal fluids are characterized by significant enrichment in light Fe isotopes. (2) The δ56Fe values of sulfides also exhibit lighter Fe isotope characteristics than those of hydrothermal fluids from hydrothermal vent fields at mid-ocean ridge. The vent temperature, fluid properties, and mineral deposition processes significantly affect the δ56Fe values of hydrothermal sulfides. (3) Chalcopyrite is preferentially enriched in heavy Fe isotopes, whereas sphalerite and pyrite are enriched in light Fe isotopes. In addition, the δ56Fe values of pyrite/marcasite display a larger range than those of chalcopyrite. This pattern is directly related to equilibrium fractionation or kinetic fractionation of Fe isotopes during the deposition of sulfides. To better understand the Fe isotope compositions of modern seafloor hydrothermal systems, the geochemical behavior and fractionation mechanisms of Fe isotopes require further in situ study. |
| format | Article |
| id | doaj-art-c4d2cdfa7dc940bf8af49802ebfc504c |
| institution | DOAJ |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-c4d2cdfa7dc940bf8af49802ebfc504c2025-08-20T03:23:03ZengWileyJournal of Chemistry2090-90632090-90712017-01-01201710.1155/2017/14173021417302Fe Isotopic Compositions of Modern Seafloor Hydrothermal Systems and Their Influence FactorsXiaohu Li0Jianqiang Wang1Hao Wang2Key Laboratory of Submarine Geosciences, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, ChinaKey Laboratory of Submarine Geosciences, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, ChinaKey Laboratory of Submarine Geosciences, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, ChinaBased on previous research on the Fe isotope compositions of various components and systems of the Earth, this study focused on the Fe isotope compositions of hydrothermal systems, including the Fe isotope variations in chalcopyrite, pyrite, and sphalerite, and their possible controlling factors. The main findings are as follows: (1) The range of Fe isotopes in hydrothermal systems at mid-ocean ridge is very large. The δ56Fe values of hydrothermal fluids are characterized by significant enrichment in light Fe isotopes. (2) The δ56Fe values of sulfides also exhibit lighter Fe isotope characteristics than those of hydrothermal fluids from hydrothermal vent fields at mid-ocean ridge. The vent temperature, fluid properties, and mineral deposition processes significantly affect the δ56Fe values of hydrothermal sulfides. (3) Chalcopyrite is preferentially enriched in heavy Fe isotopes, whereas sphalerite and pyrite are enriched in light Fe isotopes. In addition, the δ56Fe values of pyrite/marcasite display a larger range than those of chalcopyrite. This pattern is directly related to equilibrium fractionation or kinetic fractionation of Fe isotopes during the deposition of sulfides. To better understand the Fe isotope compositions of modern seafloor hydrothermal systems, the geochemical behavior and fractionation mechanisms of Fe isotopes require further in situ study.http://dx.doi.org/10.1155/2017/1417302 |
| spellingShingle | Xiaohu Li Jianqiang Wang Hao Wang Fe Isotopic Compositions of Modern Seafloor Hydrothermal Systems and Their Influence Factors Journal of Chemistry |
| title | Fe Isotopic Compositions of Modern Seafloor Hydrothermal Systems and Their Influence Factors |
| title_full | Fe Isotopic Compositions of Modern Seafloor Hydrothermal Systems and Their Influence Factors |
| title_fullStr | Fe Isotopic Compositions of Modern Seafloor Hydrothermal Systems and Their Influence Factors |
| title_full_unstemmed | Fe Isotopic Compositions of Modern Seafloor Hydrothermal Systems and Their Influence Factors |
| title_short | Fe Isotopic Compositions of Modern Seafloor Hydrothermal Systems and Their Influence Factors |
| title_sort | fe isotopic compositions of modern seafloor hydrothermal systems and their influence factors |
| url | http://dx.doi.org/10.1155/2017/1417302 |
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