Origin and crystallization mechanism of polycrystalline diamonds in the deep Earth

• Project/Area Number: 26287138
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Petrology/Mineralogy/Economic geology
• Research Institution: Ehime University
• Principal Investigator: Ohfuji Hiroaki 愛媛大学, 地球深部ダイナミクス研究センター, 教授 (80403864)
• Co-Investigator(Kenkyū-buntansha): 井上 徹 愛媛大学, 地球深部ダイナミクス研究センター, 教授 (00291500) ; 鍵 裕之 東京大学, 理学(系)研究科(研究院), 教授 (70233666)
• Research Collaborator: SUMIYA Hitoshi ; KURIO Ayako ; KOJIMA Yohei ; TAKEDA Yuhei ; ASANO Natsuko ; YAMASHITA Tomoharu ; NAKAYA Motosuke ; ISOBE Futoshi ; Konstantin D. Litasov ; Valentn P. Afanasiev ; Nikolai P. Pokhilenko ; Alexander P. Yelisseyev
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥15,990,000 (Direct Cost: ¥12,300,000、Indirect Cost: ¥3,690,000); Fiscal Year 2016: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000); Fiscal Year 2015: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000); Fiscal Year 2014: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
• Keywords: 多結晶ダイヤモンド / バラス / カーボナード / 包有物 / 微細組織 / マントル / C-H-O流体 / 高圧

Outline of Final Research Achievements

We studied the microtexture and inclusions of polycrystalline diamonds (ballas and carbonado) to understand their origin and formation mechanism in the deep mantle. We found that most of them were formed in the subduction zone where crustal (oceanic) materials are supplied by slab subduction and C-H-O fluid (highly supersaturated with carbon) is dominated. The crystal growth and resulting microtexture seem to depend largely on the hydrodynamics (still or advective) of the growth media. Furthermore, we found, for the first time, a natural counterpart of nano-polycrystalline diamond, which is synthesized by high pressure and high temperature experiment and known to have superior hardness and mechanical properties, from a large impact crater in Russia and revealed the formation mechanism.

Research Products

• [Int'l Joint Research] ロシア科学アカデミー(ロシア連邦)
• [Int'l Joint Research] 米国宝石学会(米国)
• [Int'l Joint Research] ロシア科学アカデミー(ロシア連邦)
• [Journal Article] ynthesis of coarse-grain-dispersed nano-polycrystalline cubic boron nitride by direct transformation under ultrahigh pressure (2017)
  • Author(s): Y. Ichida, H. Ohfuji, T. Irifune, T. Kunimoto, Y. Kojima, T. Shinmei
  • Journal Title: Diamond and Related Materials Volume: 印刷中
  • Peer Reviewed
• [Journal Article] Water-bearing, high-pressure Ca-silicates (2017)
  • Author(s): P. Nemeth, K. Leinenweber, H. Ohfuji, T. Groy, K.J. Domanik, I.J. Kovacs, J.S. Kovacs, P.R. Buseck
  • Journal Title: Earth and Planetary Science Letters Volume: 印刷中
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Precipitates within olivine phenocrysts in oxidized andesitic scoria from Kasayama volcano, Hagi, Yamaguchi Prefecture (2017)
  • Author(s): T. Ejima, M. Yamada, M. Akasaka, H. Ohfuji, T. Kon, M. Nagashima, Y. Nakamuta
  • Journal Title: Journal of Mineralogical and Petrological Sciences Volume: 印刷中
  • Peer Reviewed
• [Journal Article] Melting temperatures of MgO under high pressure by micro-texture analysis (2017)
  • Author(s): T. Kimura, H. Ohfuji, M. Nishi, T. Irifune
  • Journal Title: Nature Communications Volume: 印刷中
  • Peer Reviewed / Open Access
• [Journal Article] Transition mechanism of sH to filled-ice Ih structure of methane hydrate under fixed pressure condition (2017)
  • Author(s): H. Kadobayashi, H. Hirai, H. Ohfuji, Y. Kojima, Y. Ohishi, N. Hirao, M. Ohtake, Y. Yamamoto
  • Journal Title: Journal of Physics: Conference Series Volume: 印刷中
  • Peer Reviewed
• [Journal Article] Melting relations in the MgO-MgSiO3 system up to 70 GPa. (2017)
  • Author(s): Ohnishi, S., Kuwayama, Y., Inoue, T.
  • Journal Title: Phys. Chem. Minerals Volume: 印刷中 Issue: 6 Pages: 445-453
  • DOI: 10.1007/s00269-017-0871-8
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Mineralogical and crystallographic features of polycrystalline yakutite diamond (2017)
  • Author(s): Ohfuji, H., Nakaya, M., Yelisseyev, A.P., Afanasiev, V.P. and Litasov, K.D.
  • Journal Title: Journal of Mineralogical and Petrological Sciences Volume: 112 Issue: 1 Pages: 46-51
  • DOI: 10.2465/jmps.160719g
  • NAID: 130005461019
  • ISSN: 1345-6296, 1349-3825
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Transparent polycrystalline cubic silicon nitride. (2017)
  • Author(s): N. Nishiyama, R. Ishikawa, H. Ohfuji, H. Marquardt, A. Kurnosov, T. Taniguchi, B.-N. Kim, H. Yoshida, A. Masuno, J. Bednarcik, E. Kulik, Y. Ikuhara, F. Wakai, T. Irifune
  • Journal Title: Scientific Reports Volume: 7 Issue: 1 Pages: 44755-44755
  • DOI: 10.1038/srep44755
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Pressure-induced nano-crystallization of silicate garnets from glass (2017)
  • Author(s): T. Irifune, K. Kawakami, T. Arimoto, H. Ohfuji, T. Kunimoto, and T. Shinmei
  • Journal Title: Nature Communications Volume: 7 Issue: 1 Pages: 13753-13753
  • DOI: 10.1038/ncomms13753
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Stability field of phase Egg, AlSiO₃OH at high pressure and high temperature: possible water reservoir in mantle transition zone (2017)
  • Author(s): K. Fukuyama, E. Ohtani, Y. Shibazaki, H. Kagi, and A. Suzuki
  • Journal Title: Journal of Mineralogical and Petrological Sciences Volume: 112 Issue: 1 Pages: 31-35
  • DOI: 10.2465/jmps.160719e
  • NAID: 130005461018
  • ISSN: 1345-6296, 1349-3825
  • Peer Reviewed / Open Access
• [Journal Article] Detection of increased heating and estimation of coseismic shear stress from Raman spectra of carbonaceous material in pseudotachylytes (2017)
  • Author(s): Ito, K., K. Ujiie, and H. Kagi
  • Journal Title: Geophysical Research Letters Volume: 44 Issue: 4 Pages: 1749-1757
  • DOI: 10.1002/2016gl072457
  • NAID: 120007134982
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Structural incorporation of MgCl2 into ice VII at room temperature (2017)
  • Author(s): M. Watanabe K. Komatsu, F. Noritake, and H. Kagi
  • Journal Title: Japanese Journal of Applied Physics Volume: 印刷中 Issue: 5S3 Pages: 05FB03-05FB03
  • DOI: 10.7567/jjap.56.05fb03
  • NAID: 210000147806
  • Peer Reviewed / Open Access
• [Journal Article] Stability region of K0.2Na0.8AlSi3O8 hollandite at 22 GPa and 2273 K (2016)
  • Author(s): Y. Zhou, T. Irifune, T. Ohfuji, T. Shinmei, and W. Du
  • Journal Title: Physics and Chemistry of Minerals Volume: 44 Issue: 1 Pages: 33-42
  • DOI: 10.1007/s00269-016-0834-5
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Stability and partial oligomerization of naphthalene under high pressure at room temperature (2016)
  • Author(s): A. Shinozaki, K. Mimura, T. Nishida, T. Inoue, S. Nakano, and H. Kagi
  • Journal Title: Chemical Physics Letters Volume: 662 Pages: 263-267
  • DOI: 10.1016/j.cplett.2016.09.042
  • Peer Reviewed / Open Access
• [Journal Article] Micro- and nano-inclusions in a superdeep diamond from Sao Luiz, Brazil (2016)
  • Author(s): H. Kagi, D.A. Zedgenizov, H. Ohfuji, and H. Ishibashi
  • Journal Title: Geochemistry International Volume: 54 Issue: 10 Pages: 834-838
  • DOI: 10.1134/s0016702916100062
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Relationships between textural and photoluminescence spectral features of carbonado (natural polycrystalline diamond) and implications for its origin (2016)
  • Author(s): Ishibashi, H., Kagi, H., Odake, S., Ohfuji, H. and Kitawaki, H.
  • Journal Title: Geochem Int+ Volume: 54 Issue: 10 Pages: 882-889
  • DOI: 10.1134/s0016702916100050
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Phase relation of CaSO4 at high pressure and temperature up to 90 GPa and 2300K. (2016)
  • Author(s): Fujii, T., Ohfuji, H. and Inoue, T.,
  • Journal Title: Physics and Chemistry of Minerals Volume: 43 Issue: 5 Pages: 353-361
  • DOI: 10.1007/s00269-016-0799-4
  • Peer Reviewed / Open Access
• [Journal Article] The mineralogy of Ca-rich inclusions in sublithospheric diamonds (2016)
  • Author(s): D.A. Zedgenizov, A.L. Ragozin, V.V. Kalinina, H. Kagi
  • Journal Title: Geochemistry International Volume: 54 Issue: 10 Pages: 890-900
  • DOI: 10.1134/s0016702916100116
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Pressure-induced freeze concentratio of alanine aqueous solution as a novel field of chemical reaction (2016)
  • Author(s): Takahashi S., Kagi H., Fujimoto C., Shinozaki A., Gotou H., Nishida T. and Mimura K.
  • Journal Title: Chemistry Letters Volume: 46 Issue: 3 Pages: 334-337
  • DOI: 10.1246/cl.160992
  • NAID: 130005436526
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] The features of Ca-mineralogy of inclusions in sublithospheric diamonds (2016)
  • Author(s): Zedgenizov, D.A., Ragozin, A.L., Kalinina, V.V., Kagi, H.
  • Journal Title: Geochemistry International Volume: 印刷中
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Preferential dissolution of SiO2 from enstatite to H2 fluid under high pressure and temperature. (2015)
  • Author(s): Shinozaki A., Kagi H., Hirai H., Ohfuji H., Okada T., Nakano S. and Yagi T.
  • Journal Title: Physics and Chemistry of Minerals Volume: 43 Issue: 4 Pages: 277-285
  • DOI: 10.1007/s00269-015-0792-3
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Occurrence of Fe3+ and formation process of precipitates within oxidized olivine phenocrysts in basalt lava from Kuroshima volcano, Goto island, Nagasaki, Japan. (2015)
  • Author(s): Ejima, T., Akasaka, M., Nagao, T., Ohfuji, H.
  • Journal Title: Mineral. Mag. Volume: 79 Issue: 7 Pages: 1833-1848
  • DOI: 10.1180/minmag.2015.079.7.08
  • Peer Reviewed
• [Journal Article] Natural occurrence of pure nano-polycrystalline diamond from impact carter. (2015)
  • Author(s): Ohfuji, H., Irifune, T., Litasov, K.D., Yamashita, T., Isobe, F., Afanasiev, V.P., Pokhilenko, N.P.
  • Journal Title: Sci. Rep. Volume: 5 Issue: 1 Pages: 14702-14702
  • DOI: 10.1038/srep14702
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] EDS quantification of light elements using osmium surface coating (2015)
  • Author(s): Ohfuji, H., Yamamoto, M.
  • Journal Title: Journal of Mineralogical and Petrological Sciences Volume: 110 Issue: 4 Pages: 189-195
  • DOI: 10.2465/jmps.141126
  • NAID: 130005094723
  • ISSN: 1345-6296, 1349-3825
  • Peer Reviewed
• [Journal Article] A complete solid solution with rutile-type structurein SiO2-GeO2 system at 12 GPa and 1600°C (2015)
  • Author(s): E. Kulik, N. Nishiyama, A. Masuno, Y. Zubravichus, V. Murzin, E. Khramov, A. Yamada, H. Ohfuji, H.-C. Wille, T. Irifune, T. Katsura
  • Journal Title: Journal of the American Ceramic Society Volume: 98 Issue: 12 Pages: 4111-4116
  • DOI: 10.1111/jace.13859
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Evidence for phase transitions in mineral inclusions in superdeep diamonds of the Sao Luiz deposit (Brazil) (2015)
  • Author(s): Zedgenizov, D.A., Shatsky, V.S., Panin, A.V., Evtushenko, O.V., Ragozin, A.L., Kagi, H.
  • Journal Title: Russian Geology and Geophysics Volume: 56 Issue: 1-2 Pages: 296-305
  • DOI: 10.1016/j.rgg.2015.01.021
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Decarbonation and melting in MgCO₃–SiO₂ system at high temperature and high pressure (2015)
  • Author(s): Kakizawa, S., Inoue, T., Suenami, H. and Kikwagawa, T.,
  • Journal Title: Journal of Mineralogical and Petrological Sciences Volume: 110 Issue: 4 Pages: 179-188
  • DOI: 10.2465/jmps.150124
  • NAID: 130005094721
  • ISSN: 1345-6296, 1349-3825
  • Peer Reviewed
• [Journal Article] Long-term observation of permeability in sedimentary rocks under high-temperature and stress conditions and its interpretation mediated by microstructural investigations (2015)
  • Author(s): Yasuhara, H., N. Kinoshita, H. Ohfuji, M. Takahashi, K. Ito, and K. Kishida
  • Journal Title: Water Resources Research Volume: 51 Issue: 7 Pages: 5425-5449
  • DOI: 10.1002/2014wr016427
  • NAID: 130005158245
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] A possible new Al-bearing hydrous Mg-silicate (23 angstrom phase) in the deep upper mantle. (2015)
  • Author(s): Cai, N., Inoue, T., Fujino, K., Ohfuji, H. and Yurimoto, H.
  • Journal Title: American Mineralogist Volume: 100 Issue: 10 Pages: 2330-2335
  • DOI: 10.2138/am-2015-5148
  • Peer Reviewed / Open Access
• [Journal Article] High pressure and high temperature synthesis of rhenium carbide by using rhenium and nanoscale amorphous two-dimensional carbon nitride (2015)
  • Author(s): Yasui, N., Sougawa, M., Hirai, M., Yamamoto, K., Okada, T., Yamazaki, D., Kojima, Y., Ohfuji, H., Kunitsugu, S., Takarabe, K.
  • Journal Title: Congent Physics Volume: 2 Issue: 1 Pages: 1076702-1076702
  • DOI: 10.1080/23311940.2015.1076702
  • Peer Reviewed
• [Journal Article] Pressure estimation using diamond Raman scale at low pressures in DAC experiments using a highly confocal Raman system (2015)
  • Author(s): T. Fuji, H. Ohfuji
  • Journal Title: Measurement, Science and Technology Volume: 26 Issue: 2 Pages: 025501-025501
  • DOI: 10.1088/0957-0233/26/2/025501
  • Peer Reviewed / Open Access
• [Journal Article] In Situ Observation of Pressure-induced Crystallization from Amorphous Calcium Carbonate by Time-resolved X-ray Diffraction (2015)
  • Author(s): Maruyama K., Kagi H., Inoue T., Ohfuji H. and Yoshino T.
  • Journal Title: Chemistry Letters Volume: 44 Issue: 4 Pages: 434-436
  • DOI: 10.1246/cl.141062
  • NAID: 130005062153
  • ISSN: 0366-7022, 1348-0715
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] A Possible New Al-bearing hydrous Mg-silicate (23A phase) in the deep upper mantle (2015)
  • Author(s): N. Cai, T. Inoue, K. Fujino, H. Ohfuji, H. Yurimoto
  • Journal Title: American Mineralogist Volume: in press
  • Peer Reviewed
• [Journal Article] Local variations of carbon isotopic composition in diamonds from Sao-Luis (Brazil): evidence for heterogeneous carbon reservoir in sublithospheric mantle (2014)
  • Author(s): D.A. Zedgenizov, H. Kagi, V.S. Shatsky, A.L. Ragozin
  • Journal Title: Chemical Geology Volume: 363 Pages: 114-124
  • DOI: 10.1016/j.chemgeo.2013.10.033
  • Peer Reviewed
• [Journal Article] Ultralow viscosity of carbonate melts at high pressures (2014)
  • Author(s): Kono, Y., Kenney-Benson, C., Hummer, D., Ohfuji, H., Park, C., Shen, G., Wang, Y., Kavner, A.,
  • Journal Title: Nature Communications Volume: 5 Issue: 1 Pages: 5091-5091
  • DOI: 10.1038/ncomms6091
  • Peer Reviewed / Open Access
• [Journal Article] Equation of state and phase transition of antigorite under high pressure and high temperature (2014)
  • Author(s): Yang, C., T. Inoue, A. Yamada, T. Kikegawa, J. Ando
  • Journal Title: Phys. Earth Planet. Inter. Volume: 228 Pages: 56-62
  • DOI: 10.1016/j.pepi.2013.07.008
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Presentation] Synthesis and properties of ultrahard, transparent nanopolycrystalline diamond (2016)
  • Author(s): H. Ohfuji and T. Irifune
  • Organizer: 12th Laser Ceramics Symposium
  • Place of Presentation: Saint Louis, France
  • Year and Date: 2016-11-30
  • Int'l Joint Research / Invited
• [Presentation] Pressure-induced olygomerization of L-alanine: prebiologic peptide formation in icy planets (2016)
  • Author(s): H. Kagi, C. Fujimoto, S. Takahashi, K. Komatsu and A. Shinozaki
  • Organizer: 2016 International Conference on the Earth’s Deep Interior
  • Place of Presentation: Wuhan, China
  • Year and Date: 2016-11-06
  • Int'l Joint Research / Invited
• [Presentation] 高圧下におけるAlに富むブリッジマナイトの弾性波速度測定 (2016)
  • Author(s): 井上徹，Greaux Steeve，野田昌道，柿澤翔，肥後祐司，丹下慶範
  • Organizer: 第57回高圧討論会
  • Place of Presentation: 筑波大学（茨城県・つくば市）
  • Year and Date: 2016-10-26
• [Presentation] 高温高圧，C-H-O流体存在下におけるMgSiO3の分解 (2016)
  • Author(s): 大藤弘明，井川舜太，門林宏和，木村友亮
  • Organizer: 日本鉱物科学会2016年年会
  • Place of Presentation: 金沢大学（石川県・金沢市）
  • Year and Date: 2016-09-25
• [Presentation] Ａｌに富む無水及び含水ブリッジマナイトの弾性波速度測定 (2016)
  • Author(s): 井上徹，Greaux Steeve，野田昌道，柿澤翔，肥後祐司，丹下慶範
  • Organizer: 日本鉱物科学会2016年年会
  • Place of Presentation: 金沢大学（石川県・金沢市）
  • Year and Date: 2016-09-23
• [Presentation] Successful synthesis of pure, super-hard carbon nitride at high pressure and high temperature (2016)
  • Author(s): H. Ohfuji
  • Organizer: 8th International Workshop on Spinel Nitrides and Related Materials
  • Place of Presentation: Rudesheim, Germany
  • Year and Date: 2016-09-08
  • Int'l Joint Research
• [Presentation] Diamond formation from magnesite in the presence of C-H-O fluid under high pressure and temperature (2016)
  • Author(s): H. Ohfuji
  • Organizer: International Symposium "Advances in High-pressure Research-III: Towards Geodynamic Implications-2016"
  • Place of Presentation: Novosibirsk, Russia
  • Year and Date: 2016-08-29
  • Int'l Joint Research
• [Presentation] Water storage capacity in the lower mantle (2016)
  • Author(s): T. Inoue
  • Organizer: International Symposium "Advances in High-pressure Research-III: Towards Geodynamic Implications-2016"
  • Place of Presentation: Novosibirsk, Russia
  • Year and Date: 2016-08-29
  • Int'l Joint Research
• [Presentation] 微細組織から探る鉱物の結晶化プロセス～天然鉱物から世界最硬の人造ダイヤまで～ (2016)
  • Author(s): 大藤弘明
  • Organizer: JEOL 2016SEMユーザーズミーティング（大阪）
  • Place of Presentation: 千里ライフサイエンスセンター(大阪府・豊中市）
  • Year and Date: 2016-07-08
  • Invited
• [Presentation] 微細組織から探る鉱物の結晶化プロセス～天然鉱物から世界最硬の人造ダイヤまで～ (2016)
  • Author(s): 大藤弘明
  • Organizer: JEOL 2016SEMユーザーズミーティング（東京）
  • Place of Presentation: 東京大学（東京都・文京区）
  • Year and Date: 2016-07-01
  • Invited
• [Presentation] Mantle Origin of Natural Polycrystalline Diamond, Carbonado, Inferred from Inclusion Chemistry (2016)
  • Author(s): H. Kagi, N. Shiraishi, H. Sumino, N. Asano, H. Ohfuji, R. Senda and K. Suzuki
  • Organizer: Goldschmidt 2016
  • Place of Presentation: パシフィコ横浜（神奈川県・横浜市）
  • Year and Date: 2016-06-29
  • Int'l Joint Research / Invited
• [Presentation] Diamond formation from magnesite in the presence of C-H-O fluid under high pressure and temperature (2016)
  • Author(s): H. Ohfuji, S. Ikawa and T. Kimura
  • Organizer: Goldschmidt 2016
  • Place of Presentation: パシフィコ横浜（神奈川県・横浜市）
  • Year and Date: 2016-06-28
  • Int'l Joint Research
• [Presentation] Hydrous bridgmanite: Possible water reservior in the lower mantle (2016)
  • Author(s): T. Inoue, S. Kakizawa, K. Fujino, T. Kuribayashi, T. Nagase, S. Greaux, T. Higo, N. Sakamoto, H. Yurimoto, T. Hattori and A. Sano
  • Organizer: Goldschmidt 2016
  • Place of Presentation: パシフィコ横浜（神奈川県・横浜市）
  • Year and Date: 2016-06-26
  • Int'l Joint Research
• [Presentation] Experimental study on the graphite-diamond transformation and its implication for the formation mechanism of natural impact diamonds (2016)
  • Author(s): H. Ohfuji
  • Organizer: DCO (Deep Carbon Observatory) Symposium
  • Place of Presentation: パシフィコ横浜（神奈川県・横浜市）
  • Year and Date: 2016-06-26
  • Int'l Joint Research / Invited
• [Presentation] 多結晶ダイヤモンドYakutiteの鉱物結晶学的特徴とその起源 (2016)
  • Author(s): 大藤弘明，中谷元祐，Litasov Konstantin, Afanasiev Valentin, Yelisseyev Alexander
  • Organizer: 日本地球惑星科学連合2016年大会
  • Place of Presentation: 幕張メッセ（千葉県・千葉市）
  • Year and Date: 2016-05-25
• [Presentation] Hydrous bridgmanite: Water storage capacity in the lower mantle (2016)
  • Author(s): 井上徹，柿澤翔，藤野清志，栗林貴弘，長瀬敏郎，Greaux, S.，肥後祐司，坂本直哉，圦本尚義，服部高典，佐野亜沙美
  • Organizer: 日本地球惑星科学連合2016年大会
  • Place of Presentation: 幕張メッセ（千葉県・千葉市）
  • Year and Date: 2016-05-22
  • Invited
• [Presentation] 高温高圧下における炭酸塩およびケイ酸塩鉱物とC-H-O流体との反応 (2015)
  • Author(s): 井川舜太，大藤弘明，木村友亮
  • Organizer: 第56回高圧討論会
  • Place of Presentation: JMSアステールプラザ，広島県広島市
  • Year and Date: 2015-11-10
• [Presentation] クロスセクションポリッシャを用いた高圧実験回収試料の断面加工 (2015)
  • Author(s): 大藤弘明，木村友亮，朝比奈俊輔
  • Organizer: 第56回高圧討論会
  • Place of Presentation: JMSアステールプラザ，広島県広島市
  • Year and Date: 2015-11-10
• [Presentation] 高圧含水鉱物の合成とそのキャラクタリゼーション (2015)
  • Author(s): 井上徹，柿澤翔，Cai, N.，藤野清志，栗林貴弘，長瀬敏郎，Greaux, S.，肥後祐司，坂本直哉，圦本尚義，服部高典，佐野亜沙美
  • Organizer: 第56回高圧討論会
  • Place of Presentation: JMSアステールプラザ，広島県広島市
  • Year and Date: 2015-11-10
• [Presentation] Microtexture and formation mechanism of impact diamonds from the Popigai crater, Russia (2015)
  • Author(s): Ohfuji, H.
  • Organizer: International Seminar "High-Pressure Mineralogy: Theory and Experiment"
  • Place of Presentation: モスクワ大，ロシア
  • Year and Date: 2015-10-22
  • Int'l Joint Research
• [Presentation] 天然多結晶ダイヤモンド，カーボナードの鉱物結晶学的記載と成因の考察 (2015)
  • Author(s): 淺野奈津子，大藤弘明，鍵裕之
  • Organizer: 日本鉱物科学会2015年年会
  • Place of Presentation: 東京大学，東京都文京区
  • Year and Date: 2015-09-25
• [Presentation] Mantle process inferred from Os laotopic signatures and micro tectures in carbonado diamonds (2015)
  • Author(s): Kagi, H., Shiraishi, N., Sumino, H., Senda, R., Suzuki, K., Asano, N. and Ohfuji, H
  • Organizer: Goldschmidt2015
  • Place of Presentation: プラハ，チェコ
  • Year and Date: 2015-08-16
  • Int'l Joint Research
• [Presentation] The stability and water solubility of possible Al-bearing high pressure hydrous and nominally anhydrous minerals in the mantle (2015)
  • Author(s): Inoue, T., Kakizawa, S., Cai, N., Fujino, K., Kuribayashi, T., Nagase, T., Greaux, S., Higo, Y., Sakamoto, N., Yurimoto, H.
  • Organizer: Goldschmidt2015
  • Place of Presentation: プラハ，チェコ
  • Year and Date: 2015-08-16
  • Int'l Joint Research
• [Presentation] C-H-O流体存在下におけるマグネサイトからのダイヤモンド生成 (2015)
  • Author(s): 大藤弘明，井川舜太，木村友亮
  • Organizer: 日本地球惑星科学連合2015年大会
  • Place of Presentation: 幕張メッセ国際会議場，千葉県千葉市
  • Year and Date: 2015-05-24
• [Presentation] カルボナドダイヤモンドのＯｓ同位体比と微細組織からみたマントルプロセス (2015)
  • Author(s): 鍵裕之，白石智子，仙田量子，鈴木勝彦，淺野奈津子，大藤弘明
  • Organizer: 日本地球惑星科学連合2015年大会
  • Place of Presentation: 幕張メッセ国際会議場，千葉県千葉市
  • Year and Date: 2015-05-24
• [Presentation] 高圧合成ナノ多結晶ダイヤモンドの結晶化・組織化メカニズム (2015)
  • Author(s): 大藤弘明
  • Organizer: 第2回放射光・中性子によるセラミックス原子相関解析研究会
  • Place of Presentation: 岡山大学（岡山県・岡山市）
  • Year and Date: 2015-03-18
  • Invited
• [Presentation] Crystallization process of polycrystalline "ballas" diamonds (2015)
  • Author(s): H. Ohfuji, Y. Takeda, H. Kagi, S. Fukura
  • Organizer: International Diamond School 2015
  • Place of Presentation: ブレッサノーネ-ブリクセン（イタリア）
  • Year and Date: 2015-01-28 – 2015-01-30
• [Presentation] In situ X-ray observation of dehydration and EoS of chlorite under high pressure and temperature (2014)
  • Author(s): T. Inoue, H. Suenami, T. Kikegawa
  • Organizer: 2014 AGU Fall Meeting
  • Place of Presentation: サンフランシスコ（アメリカ）
  • Year and Date: 2014-12-15 – 2014-12-19
• [Presentation] Osコーティングを用いたEDS軽元素定量とEBSD分析例 (2014)
  • Author(s): 大藤弘明
  • Organizer: オックスフォードインストゥルメンツ AZtecセミナー2014秋季
  • Place of Presentation: オックスフォードインストゥルメンツ（株）（東京都・品川区）
  • Year and Date: 2014-10-10
  • Invited
• [Presentation] オスミウム蒸着膜を用いた軽元素のEDS定量 (2014)
  • Author(s): 大藤弘明，山本昌志
  • Organizer: 日本鉱物科学会2014年年会
  • Place of Presentation: 熊本大学（熊本県・熊本市）
  • Year and Date: 2014-09-19
• [Presentation] Al incorporation in dense hydrous magnesium silicates (2014)
  • Author(s): T. Inoue, K. Hayashi, H. Yurimoto
  • Organizer: IMA2014
  • Place of Presentation: ヨハネスブルグ（南アフリカ）
  • Year and Date: 2014-09-03
• [Presentation] Coupled substitution of H+ and Al3+ into deep mantle minerals (2014)
  • Author(s): T. Inoue, N. Cai, K. Hayashi, H. Yurimoto
  • Organizer: Asia Oceania Geosciences Society
  • Place of Presentation: ロイトン札幌（北海道・札幌市）
  • Year and Date: 2014-08-01
• [Presentation] Popigai産インパクトダイヤモンドの微細組織と形成メカニズム (2014)
  • Author(s): 大藤弘明，山下智治，K. Litasov，V.P. Afanasiev，N.P. Pokhilenko
  • Organizer: 日本地球惑星連合2014年大会
  • Place of Presentation: パシフィコ横浜（神奈川県・横浜市）
  • Year and Date: 2014-05-01
• [Presentation] オスミウム同位体組成と天然多結晶ダイヤモンド（カルボナド）の起源 (2014)
  • Author(s): 白石智子，仙田量子，鍵裕之，大藤弘明，角野浩史，鈴木勝彦
  • Organizer: 日本地球化学会
  • Place of Presentation: 富山大学（富山県・富山市）
  • Year and Date: 2014-04-30