| Project/Area Number |
20K05395
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 31020:Earth resource engineering, Energy sciences-related
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| Research Institution | Akita University |
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Principal Investigator |
AGANGI ANDREA 秋田大学, 国際資源学研究科, 教授 (20840812)
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| Co-Investigator(Kenkyū-buntansha) |
高橋 亮平 秋田大学, 国際資源学研究科, 准教授 (10396286)
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| Project Period (FY) |
2020-04-01 – 2025-03-31
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| Project Status |
Granted (Fiscal Year 2023)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2024: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2023: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2022: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | Kuroko / Massive sulfide deposit / Metals / Hydrothermal process / ore deposit / gold / massive sulfide / seafloor mineralisation / sulfide |
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| Outline of Research at the Start |
Through a series of mineralogical and geochemical analyses, this study aims at better understanding the content and distribution of Au and Ag in metal ore deposits that have formed during hydrothermal activity developed on the sea floor of both ancient and modern oceans.
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| Outline of Annual Research Achievements |
During fiscal year 2023, new analyses were performed, including Pb isotope analyses at the University of Johannesburg, South Africa and element mineral analyses at Akita. The Pb isotope analyses will be combined with previous trace element analyses (including Au and Ag) in order to infer the source of precious metals in the Kuroko. This is a central part of the planned work submitted in the original plan.
Analyses of sulfides will help constrain the contents of Au and Ag of the individual mineral phases. In addition, analyses of volcanic host-rocks, including whole-rock and mineral analyses, will be used to constrain the volcanic processes that produced hydrothermal circulation and ore deposition.
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
The results of this research are overall satisfactory so far. A good proportion of the analyses have been completed, although data gathering will continue through fiscal year 2024. Some delay was introduced due to the difficulty to book the laboratory at University of Johannesburg. However, this was solved within 2023, and the data were collected in September 2023. Further delay was introduced by the necessity to process large a number of samples in order to find the appropriate sample material for analysis. Because of this sample processing will continue in the next months. Data elaboration and manuscript writing for publication is currently underway.
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| Strategy for Future Research Activity |
Data gathering will continue through fiscal year 2024, along with data interpretation and write-up for conference presentations and manuscript submission. Part of these results will be presented in two conference presentations scheduled in Tokyo in 2024 (May 20240 and Busan, Korea (Aug 2024). A manuscript is currently in preparation for submission to an international journal, and is expected to be submitted for publication later this year.
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