2025 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)
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Oral presentationR5: Extraterrestrial materials

R5: Extraterrestrial materials

Thu. Sep 11, 2025 2:00 PM - 5:00 PM JST
Thu. Sep 11, 2025 5:00 AM - 8:00 AM UTC
Oral Presentation B (Room No. 28)
Chairperson:Toru Matsumoto(Kyoto University), Daiki Yamamoto(Kyushu University), Megumi Matsumoto(Tohoku University)
2:00 PM - 2:15 PM JST(5:00 AM - 5:15 AM UTC)

[R5-11]Investigation of sodium salt minerals in Ryugu samples

*Toru MATSUMOTO1, Takaaki Noguchi2, Akira Miyake2 (1. Kyoto Univ. Hakubi, 2. Kyoto Univ. Sci.)
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2:15 PM - 2:30 PM JST(5:15 AM - 5:30 AM UTC)

[R5-12]On the relationship between the proportion of different lithological fragments composing the asteroid Ryugu samples and CI chondrites and the inner structure of the parent body

*Takashi MIKOUCHI1, Minami Masuda2, Hideto Yoshida2, Michel E. Zolensky3, Tomoki Nakamura4 (1. Univ. Museum, Univ. of Tokyo, 2. Grad. Sch. Sci., Univ. of Tokyo, 3. NASA-JSC, 4. Grad. Sch. Sci., Tohoku Univ.)
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2:30 PM - 2:45 PM JST(5:30 AM - 5:45 AM UTC)

[R5-13]Bulk Density, Porosity, and Fe/Mg Ratio of Bennu Particle Matrices: Comparison with Ryugu and Carbonaceous Chondrites.

*Akira TSUCHIYAMA1, Megumi Matsumoto2, Masanori Yasutake3, Junya Matsuno4, Kentaro Uesugi3, Akihisa Takeuchi3, Toru Matsumoto5, Haruka Ohno6, Mingqi Sun7, Tomoyo Morita2, Shogo Tachibana8, Harlord C Connolly9, Dante S Lauretta10 (1. Ritsumeikan Univ. ROST, 2. Tohoku Univ. Sci., 3. JASRI/SPring-8, 4. Kyoto Univ. ICR, 5. Kyoto Univ. Hakubi, 6. Kyoto Univ. Sci., 7. CAS/GIG, 8. Univ. Tokyo Sci., 9. Rowan Univ., 10. Univ. Arizona)
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2:45 PM - 3:00 PM JST(5:45 AM - 6:00 AM UTC)

[R5-14]A highly primitive asteroid Bennu particle preserving dust from the early solar system

*Megumi MATSUMOTO1, Akira Tsuchiyama2,3, Masahiro Yasutake4, Toru Matsumoto5, Tomoyo Morita1, Daisuke Nakashima1, Haruka Ohno5, Shogo Tachibana6, Harold C. Connolly7,8,9, Dante S. Lauretta8 (1. Tohoku Univ., 2. Ritsumeikan Univ., 3. GIG/CAS, 4. JASRI/SPring-8, 5. Kyoto Univ., 6. Univ. Tokyo, 7. Rowan Univ., 8. Univ. Arizona, 9. American Museum of Natural History)
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3:00 PM - 3:30 PM JST(6:00 AM - 6:30 AM UTC)Invited Lecture

[R5-15]Anhydrous primary minerals in Ryugu and Bennu samples

*Noriyuki Kawasaki1, Toru Matsumoto2, Sota Arakawa3, Yushi Miyamoto1, Naoya Sakamoto1, Daiki Yamamoto4, Sara S. Russell5, Jessica Barnes6, Ann Nguyen7, Harold C. Connolly6,8, Dante S. Laurette6, Hisayoshi Yurimoto1 (1. Hokkaido Univ., 2. Kyoto Univ., 3. JAMSTEC, 4. Kyushu Univ., 5. NHM, 6. University of Arizona, 7. NASA, 8. Rowan Univ.)
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3:30 PM - 3:45 PM JST(6:30 AM - 6:45 AM UTC)

[2Oral201-09-6add]休憩

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3:45 PM - 4:15 PM JST(6:45 AM - 7:15 AM UTC)Invited Lecture

[R5-16]Search for the signatures of water from oxygen isotopic systematics of nominally anhydrous minerals

*Takayuki Ushikubo1 (1. JAMSTEC)
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4:15 PM - 4:30 PM JST(7:15 AM - 7:30 AM UTC)

[R5-17]An attempt to identify mineral nanofragmentation as the mark of multiple low-intensity impacts in carbonaceous chondrites

*Balazs Bradak1, Yusuke Seto2, Sena Toyonaga1, Akos Kereszturi3, Martin Chadima4 (1. Kobe University, 2. Osaka Metropolitan University, 3. Hungarian Academy of Sciences, 4. AGICO)
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4:30 PM - 4:45 PM JST(7:30 AM - 7:45 AM UTC)

[R5-18]History of presolar SiC grains in circumstellar space

*Hisayoshi YURIMOTO1, Ken-ichi Bajo1, Tatsuki Izumi1, Yuta Otsuki1, Sachiko Amari2 (1. Hokkaido University, 2. Washington University)
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4:45 PM - 5:00 PM JST(7:45 AM - 8:00 AM UTC)

[R5-19]An experimental simulation of the destruction processes of presolar SiC grains under low-pressure conditions

*Daiki YAMAMOTO1, Aki TAKIGAWA2, Lily ISHIZAKI2, Ryosuke SAKURAI3, Yuki INOUE1, Junji YAMAMOTO1, Sota ARAKAWA4, Shogo TACHIBANA2 (1. Kyushu University, 2. The University of Tokyo, 3. Japan Aerospace Exploration Agency, 4. Japan Agency for Marine-Earth Science and Technology)
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