[R1] R1: Characterization and description of minerals (Joint Session with The Gemmological Society of Japan) | 2025 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)

2025 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)

Session Details

Oral presentationR1: Characterization and description of minerals (Joint Session with The Gemmological Society of Japan)

R1: Characterization and description of minerals (Joint Session with The Gemmological Society of Japan)

Thu. Sep 11, 2025 2:00 PM - 3:15 PM JST
Thu. Sep 11, 2025 5:00 AM - 6:15 AM UTC

Oral Presentation A (Room No. 2)

Chairperson:Yasuyuki Banno(AIST), Hiroshi Kitawaki(Central Gem Laboratory)

2:00 PM - 2:15 PM JST(5:00 AM - 5:15 AM UTC)

[R1-10]Striations on Apophyllite Surface

*Hisao Kanda

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2:15 PM - 2:30 PM JST(5:15 AM - 5:30 AM UTC)

[R1-11]Development of a new method for identifying Itoigawa jadeitite using thermal conductivity, magnetic susceptibility, and rebound hardness

*Takahiko OGAWARA¹ (1. Fossa Magna Museum)

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2:30 PM - 2:45 PM JST(5:30 AM - 5:45 AM UTC)

[R1-12]Rare Mixed typeⅡb and typeⅠ(Boron and Nitrogen Centers) Natural Diamond

*Hiroshi KITAWAKI¹, Kentaro Emori¹, Mio Hisanaga¹, Masahiro Yamamoto¹, Kenji Watanabe², Hisao Kanda³ (1. Central Gem Laboratory, 2. NIMS, 3. former NIMS)

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2:45 PM - 3:00 PM JST(5:45 AM - 6:00 AM UTC)Student Presentation Award Entry

[R1-13]Correlations between the structural and impurity features revealing fluctuant growth conditions of natural fibrous diamonds

*Chengyang Sun^1,2, Mingyue He¹, Taijin Lu³, Shinji Muraishi², Yi Deng¹ (1. China Univ. Geosci. (Beijing), 2. Inst. Sci. Tokyo, 3. Nat. Gems Jew. Co., Ltd.)

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3:00 PM - 3:15 PM JST(6:00 AM - 6:15 AM UTC)

[R1-14]Characteristics of Zimbabwean natural diamonds and their growth environment

*Ahmadjan ABDURIYIM¹ (1. Tokyo Gem Science LLC)

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