Anton Shatskiy¹、Ivan Podborodnikov¹、*Konstantin Litasov¹、Artem Chanyshev¹、Anton Arefiev¹、Igor Sharygin¹、Nikolay Karmanov¹、Eiji Ohtani² (1.V.S. Sobolev Institute of Geology and Mineralogy, Russian Academy of Science、2.Department of Earth and Planetary Materials Science, Graduate School of Science, Tohoku University)