1. Department of Earth Science, Graduate School of Science, Tohoku University, Sendai, Miyagi 980-8578, Japan
2. ‡ Special collection papers can be found online at http://www.minsocam.org/MSA/AmMin/special-collections.html.
3. † ORCID 0000-0002-2682-7415
4. Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki 319-1106, Japan
5. Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
6. National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan