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2000 Fiscal Year Final Research Report Summary

Structure and property analysis of hydrous mantle minerals under high pressure

Research Project

Project/Area Number 11440155
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section一般
Research Field Petrology/Mineralogy/Science of ore deposit
Research InstitutionTohoku University

Principal Investigator

KUDOH Yasuhiro  Tohoku University, Graduate School of Science, Associate Professor, 大学院・理学研究科, 助教授 (30107693)

Co-Investigator(Kenkyū-buntansha) KURIBAYASHI Takahiro  Tohoku University, Graduate School of Science, Research Associate, 大学院・理学研究科, 助手 (20302086)
Project Period (FY) 1999 – 2000
Keywordshydrous wadsloyite / hydrous ringwoodite / phlogopite / muscovite / phase A / chondrodite
Research Abstract

Structure and property of some hydrous phases whose stability field correspond to that of upper mantle of the earth have been studied. It was found that there is probably continuous solid solution between hydrous and anhydrous wadsleyite. Small degree of Mg-Si disorder was found in the structure of hydrous ringwoodite. With increasing pressure, shifts of OH-stretching vibration band to higher wave numbers were observed in phlogopite, while shifts of OH-stretching vibration band to lower wave numbers were observed in muscovite. Structural behaviors of phase A and chondrodite under pressure were found to be similar to that of forsterite.

  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] Y.Kudoh and T.Inoue: "Mg-vacant structural modules and dilution of the symmetry of hydrous wadsleyite,β-Mg_<2-X>SiH_<2X>O_4with0.00≦x≦0.25."Phys.Chem.Minerals. 26. 382-388 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Kudoh: "Structural modules of the dense hydrous magnesium silicates in the earth's mantle."KEK Proceedings. 99-14. 107-110 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Kudoh.T.Kuribayashi.H.Mizobata.E.Ohtani,S.Sasaki and M.Tanaka: "Crystal structure of γ-Mg_<1.97>SiH_<0.03>O_4synthesized at 22 GPa and 1680℃."KEK Progress Report. 99-3. 210 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Akizuki.Y.Kudoh and S.Nakamura: "Growth texture and symmetry of heulandite-Ca from Poona,India."Canadian Mineralogist. 37. 1307-1312 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 尾関智二,工藤康弘: "「特殊条件下の構造研究の新展開」の特集にあたって."日本結晶学会誌. 41. 1-2 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Kudoh,T.Kuribayashi,H.Mizobata and E.Ohtani: "Structure and cation disorder of hydrous ringwoodite,γ-Mg_<1.89>Si_<0.98>H_<0.30>O_4."Phys.Chem.Minerals. 27. 474-479 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Kudoh and T.Inoue: "Mg-vacant structural modules and dilution of the symmetry of hydrous wadsleyite, β-Mg_<2-x>SiH_<2x>O_4 with 0.00≦x≦0.25."Phys.Chem.Minerals. 26. 382-388 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y.Kudoh: "Structural modules of the dense hydrous magnesium silicates in the earth's mantle."KEK Proceedings. 99-14. 107-110 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y.Kudoh, T.Kuribayashi, H.Mizobata, E.Ohtani, S.Sasaki and M.Tanaka: "Crystal structure of γ-Mg_<1.97>SiH_<0.03>O_4 synthesized at 22 GPa and 1680℃."KEK Proceedings. 99-3. 210 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Akizuki, Y.Kudoh and S.Nakamura: "Growth texture and symmetry of heulandite-Ca from Poona, India."Canadian Mineralogis. 37. 1307-1312 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y.Kudoh, T.Kuribayashi, H.Mizobata and E.Ohtani: "Structure and cation disorder of hydrous ringwoodite, γ-Mg_<1.89>Si_<0.98>H_<0.30>O_4."Phys.Chem.Minerals. 27. 474-479 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y.Kudoh, A.Hosono, B.Iwaki, T.Kuribayashi and M.Akizuki: "Single crystal X-ray and IR study on phlogopite and muscovite under pressure up to 8.5 GPa."Proceedings of AIRAPT-17. 615-617 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y.Kudoh, T.Kuribayashi, H.Mizobata and E.Ohtani: "Crystal structure of hydrous ringwoodite, γ-Mg_<1.89>Si_<0.98>H_<0.30>O_4 synthesized at 1300℃ and 20 GPa."Proceedings of AIRAPT-17. 612-614 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y.Kudoh, T.Kuribayashi, H.Kagi, S.Sasaki and M.Tanaka: "Crystal structure of phase A, Mg_7Si_2H_6O_<14> at 9.1 GPa."KEK Progress Reprot. 2000-2. 225 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y.Kudoh: "Structural relation of hydrous ringwoodite to hydrous wadsleyite."Phys.Chem.Minerals. (in press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2002-03-26  

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