Oxidation states of iron and occurrence of ferric iron in olivine at the upper mantle condition
| Project/Area Number |
25887040
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Petrology/Mineralogy/Economic geology
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| Research Institution | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
EJIMA Terumi 独立行政法人産業技術総合研究所, 地圏資源環境研究部門, 研究員 (70712173)
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| Project Period (FY) |
2013-08-30 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | かんらん石 / メスバウアー分光分析 / HRTEM / Fe酸化数 / マントルゼノリス / EPMA法 / 透過型電子顕微鏡 / モンゴル / スピネルレールゾライト / Ｆｅ酸化数 / 高分解能透過型電子顕微鏡 |
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| Outline of Final Research Achievements |
Several types of mantle xenoliths have been investigated to determined oxidation state of Fe and Fe3+ distribution in olivine at upper mantle condition. The results in the present study indicate that olivine in the mantle xenoliths contains a small amount of Fe3+ and that oxidation state of Fe within olivine in the mantle xenoliths from the upper mantle under the island arc and the continent are 94: 6 and 97: 3, respectively. The fact indicates that the upper mantle under the island arc is in more oxidized condition than that under the continent. This result gives a new view on the redox condition of the upper mantle.
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Report
(3 results)
Research Products
(6 results)
