Japan Geoscience Union Meeting 2014

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Symbol S (Solid Earth Sciences) » S-MP Mineralogy & Petrology

[S-MP49_1PM2] Nano-Analyses of Natures and Origins of Earth and Planetary Solids

Thu. May 1, 2014 4:15 PM - 5:45 PM 314 (3F)

Convener:*Yohey Suzuki(Graduate School of Science, The University of Tokyo), Takashi Murakami(Department of Earth and Planetary Science, Graduate School of Science, University of Tokyo), Katsuhiro Tsukimura(National Institute of Advanced Industrial Science and Technology), Masaya Suzuki(AIST, Geological Survey of Japan), Tadashi Yokoyama(Department of Earth and Space Science, Graduate School of Science, Osaka University), Keisuke Fukushi(Institute of Nature & Environmental Technology, Kanazawa University), Satoshi Mitsunobu(University of Shizuoka, Institute for Environmental Sciences), Chair:Keisuke Fukushi(Institute of Nature & Environmental Technology, Kanazawa University), Tadashi Yokoyama(Department of Earth and Space Science, Graduate School of Science, Osaka University)

4:30 PM - 4:45 PM

★ [SMP49-02] Properties and depositional process of sub-micron scale manganese oxide minerals in the aqueous surface enviromnent

*Akira USUI1 (1.Natural Science Cluster,Kochi University)

Keywords:manganese oxide mineral, manganese crust, manganese nodule, low-temperature hydrothermal activity, phyllomanganate, redox condition

A large variety of minerals form submicron compounds or minerals in the surface aqueous environments (sea waters, rivers, soils, underground waters, organisms etc.) Especially iron and manganese oxide are most mobile elements among others in such environments. The iron and manganese oxides often scavenge numbers of metallic elements and play significant role in material cycling and geochemical cycles. In this paper, we attempt to introduce several types of occurrences of manganese oxide in the diverse environments. For example a phyllo-manganate minerals, nano-scale aggregate are shown in the paper.