大洋富钴结壳研究进展及展望 |
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引用本文: | 杨燕子,陈华勇. 大洋富钴结壳研究进展及展望[J]. 大地构造与成矿学, 2023, 47(1): 80-97 |
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作者姓名: | 杨燕子 陈华勇 |
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作者单位: | 中国科学院 广州地球化学研究所 中国科学院矿物学与成矿学重点实验室, 广东 广州 510640;中国科学院大学 地球与行星科学学院, 北京 100049;中国科学院 广州地球化学研究所 中国科学院矿物学与成矿学重点实验室, 广东 广州 510640;中国科学院大学 地球与行星科学学院, 北京 100049;广东省矿物物理与材料研究开发重点实验室, 广东 广州510640 |
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基金项目: | 国家杰出青年科学基金项目(41725009)联合资助; |
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摘 要: | Cobalt-rich crust is an important seafloor mineral resource with unique economic value and scientific significance. Cobalt-rich crust is significantly enriched in Mn, Co, Ni, Cu, PGE (platinum group elements) and REY (rare earth elements + Y), and has special implications on the paleo-marine environmental records since the Cenozoic. Mn oxide (MnO2·xH2O) and Fe oxyhydroxide (FeOOH) are the dominant minerals that compose cobalt-rich crust, with most of them are nanoscale minerals. Vernadite and birnessite have a layer structure and a negative layer charge, which is compensated by cation sorption. The previous studies have extensively focused on the location of trace elements in minerals in the cobalt-rich crust, with the help of sequential leaching experiments, statistical analysis of element correlation, adsorption experiments and extended X-ray absorption fine structure (EXAFS) spectrum. Three main types of complexes in Mn oxide have been identified, i.e., edge-sharing (E), double-corner sharing (DC) and triple-corner sharing (TC). Studies have shown that the process of hydrogenetic cobalt-rich crust precipitation is basically inorganic colloidal-chemical and surface-chemical. Finally, we proposed some suggestions for the future research directions in this field. © 2023 Science Press. All rights reserved.
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关 键 词: | 富钴结壳 铁锰氧化物 形成机制 研究进展 未来发展方向 |
Formation of Oceanic Cobalt-rich Crust: Progress and Perspectives; |
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Affiliation: | 1.CAS Key Laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangdong, Guangzhou510640;2.University of Chinese Academy of Sciences, Beijing100049;3.Guangdong Provincial Key Laboratory of Mineral Physics and Minerals, Guangdong, Guangzhou510640; |
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Keywords: | cobalt-rich crust ferromanganese oxides future study directions ore-forming genesis research progress |
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