2026 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)
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Oral presentationR2: Crystal structure, crystal chemistry, physical properties of minerals, crystal growth and applied mineralogy

R2: Crystal structure, crystal chemistry, physical properties of minerals, crystal growth and applied mineralogy

Fri. Sep 25, 2026 2:15 PM - 6:00 PM JST
Fri. Sep 25, 2026 5:15 AM - 9:00 AM UTC
Room B (285)
Chairperson:Ryo Yamane, Noritake Fumiya, Nagashima Mariko, Riko Iizuka
2:15 PM - 2:45 PM JST(5:15 AM - 5:45 AM UTC)Invited Lecture

[R2-07]Crystal growth, grain growth and deformation of the solid earth

*Takehiko HIRAGA1 (1. The University of Tokyo)
2:45 PM - 3:00 PM JST(5:45 AM - 6:00 AM UTC)

[R2-08]Microstructure and Magnetic Flux Distribution in Strongly Remanent Silicon-Bearing Magnetite

*Makio OHKAWA1, Jun-ichi Ando1, Naotaka Tomioka2 (1. Hiroshima Univ. Adv. Sci. and Eng., 2. JAMSTEC・KOCHI)
3:00 PM - 3:15 PM JST(6:00 AM - 6:15 AM UTC)

[R2-09]Observation of the microstructure of periclase and magnesite pseudomorphs after nesquehonite formed by calcination

*Ryo YAMANE1 (1. National Institute for Materials Science)
3:15 PM - 3:30 PM JST(6:15 AM - 6:30 AM UTC)Student Presentation Award Entry

[R2-10]Carbonation Mechanisms of Cement Constituent Phases: An Investigation Using Synchrotron X-ray Diffraction and Raman Spectroscopy

*Shumpei Tatsunami1, Atushi Kyono2, Koudai Shibuya1 (1. University of Tsukuba, Degree Programs in Life and Earth Sciences, 2. University of Tsukuba, Faculty of Life and Environmental Sciences)
3:30 PM - 3:45 PM JST(6:30 AM - 6:45 AM UTC)Student Presentation Award Entry

[R2-11]Molecular Dynamics Study of the Vibrational States and Orientations of Water Molecules in Calcium Silicate Hydrate (C-S-H)

*Taiyo Yasumatsu1, Ryo Yoshida1, Ryo Kobayashi2 (1. NITech, Grad. Sch. Eng., Civil Engineering, 2. NITech, Grad. Sch. Eng., Applied Physics)
3:45 PM - 4:00 PM JST(6:45 AM - 7:00 AM UTC)Student Presentation Award Entry

[R2-12]Mechanism of the High-Pressure Solubility Difference Arising from the Different Compression Behaviours of L-Alanine and DL-Alanine Crystals

*Mika YOSHIOKA1, Hiroyuki Kagi1, Jun Kawano2 (1. Univ. Tokyo, Sci., 2. Hokkaido Univ. Sci.)
4:00 PM - 4:15 PM JST(7:00 AM - 7:15 AM UTC)

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4:15 PM - 4:30 PM JST(7:15 AM - 7:30 AM UTC)

[R2-13]Quantification of Water Content in Amorphous Calcium Carbonate (ACC) by ATR-IR Spectroscopy

*Kokoro Shibuya1, Hiroyuki Kagi1 (1. Grad. Sci., Univ. Tokyo)
4:30 PM - 4:45 PM JST(7:30 AM - 7:45 AM UTC)Student Presentation Award Entry

[R2-14]Effects of coupled substitution mechanisms and halogen species on the crystal structure of REE-bearing apatite

*Rio m Midorikawa1, Yoshitaka Matsushita2, Atsushi Kyono3 (1. Tsukuba Univ. LES, 2. NIMS, 3. Tsukuba Univ. ILES)
4:45 PM - 5:00 PM JST(7:45 AM - 8:00 AM UTC)

[R2-15]High-temperature cation distribution, structural distortion and displacement of Ti from the B-site position in titanomagnetite

*Hiroki OKUDERA1 (1. Kanazawa Univ. Sci.&Tech.)
5:00 PM - 5:15 PM JST(8:00 AM - 8:15 AM UTC)

[R2-16]Change in thermal expansion behavior during the stepwise dehydration of kernite Na2B4O6(OH)2·3H2O

*Atsushi KYONO1, Kodai Shibuya1, Rio Midorikawa1, Kosuke Yamaguchi1, Sumit Ranjan Maity2, Kouhei Ichiyanagi2, Yuiga Nakamura2 (1. University of Tsukuba, 2. Japan Synchrotron Radiation Research Institute)
5:15 PM - 5:30 PM JST(8:15 AM - 8:30 AM UTC)

[R2-17]Electron-Beam-Induced Dehydroxylation in Dioctahedral 2:1 Layered Silicate Minerals: An OBF-STEM Observation

*Hayato Miura1, Toshihiro Kogure2,3, Ichiro Ohnishi1, Taiga Okumura2, Shigeru Suehara4, Kazuki Komatsu3 (1. JEOL Ltd., 2. Waseda Univ. Educ., 3. Univ. Tokyo, Grad. Sch. Sci, 4. NIMS)
5:30 PM - 5:45 PM JST(8:30 AM - 8:45 AM UTC)

[R2-18]Analyzing diffusion mechanism of hydrogen in hydrous vitrified silica via molecular dynamics simulations

*Fumiya NORITAKE1 (1. University of Yamanashi)
5:45 PM - 6:00 PM JST(8:45 AM - 9:00 AM UTC)

[R2-19]Synthesis of hydrogenated nanodiamonds under static ultrahigh pressure

*Takehiro Kunimoto1, Tetsuo Irifune1, Sayako Inoué1, Takeshi Sakai1, Hiroaki Ohfuji2 (1. GRC, Ehime Univ., 2. Grad. Sch. Sci., The Univ. Tokyo)
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