2019 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)
Sep 19 - Sep 23, 2019Kyushu University Ito Campus
2019 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)
Sep 19 - Sep 23, 2019Kyushu University Ito Campus
[S2P-04]Analysis of dehydration processes in atomic scale of hydrous minerals by neutron scattering and transmission electron microscopy
*Takuo Okuchi1, Narangoo Purevjav1, Yusuke Seto2, Naotaka Tomioka3, Kaoru Shibata4, Takeshi Yamada5(1. Okayama Univ. IPM, 2. Kobe Univ., 3. JAMSTEC, 4. JAEA, 5. CROSS)
Keywords:
Neutron scattering,Transmission electron microscopy,Hydrous minerals,dehydration reactoin
Hydrous minerals have been playing fundamental roles in the evolution of the Earth. Atomic-scale transport process of hydrogen within the relevant crystal structures when dehydration occurs within these minerals (e.g. by volume diffusion or grain-boundary diffusion ?, and by transport of H+, hydrogen vacancy, or H2O ? etc.) were left unknown. We analyze these processes by means of neutron scattering and transmission electron microscopy. Here we report results on brucite, DHMS phase E, and few other hydrous minerals at temperatures to around 600 K.