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Crystal structures andthermodynamic stability of aluminum bearing Earth's lower mantle minerals

Research Project

Project/Area Number 18540478
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

KOJITANI Hiroshi  Gakushuin University, 理学部化学科, 助教 (60291522)

Co-Investigator(Kenkyū-buntansha) 赤荻 正樹  学習院大学, 理学部, 教授 (30126560)
Co-Investigator(Renkei-kenkyūsha) AKAOGI Masaki  学習院大学, 理学部化学科, 助教 (30126560)
Project Period (FY) 2006 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥4,020,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥720,000)
Fiscal Year 2008: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2007: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2006: ¥900,000 (Direct Cost: ¥900,000)
Keywords下部マントル / ペロブスカイト / カルシウムフェライト / アルミニウム / 超高圧 / 六方晶相 / 結晶構造 / 熱力学 / 高圧 / リートベルト解析 / 定圧熱容量 / ラマン分光 / IR分光 / 高圧高温実験 / 定圧熱容量測定 / 格子振動 / マントル / アルミニウム置換 / 酸素欠陥 / 固溶体 / 高圧相平衡
Research Abstract

地球下部マントルの主要鉱物であると考えられているMgSiO3ペロブスカイト中において、アルミニウムの固溶により酸素欠陥が生じる可能性があることを結晶構造の解析から示した。また、海洋底が地球深部に沈み込んだ時に安定相として現れると考えられているカルシウムフェライト相や六方晶相について、安定に存在する圧力温度領域や熱化学データの決定がなされた。

Report

(4 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • Research Products

    (32 results)

All 2009 2008 2007 2006

All Journal Article (13 results) (of which Peer Reviewed: 9 results) Presentation (19 results)

  • [Journal Article] High-pressure phase relations in Ca_2AlSi_<O5.5> and energetics of perovskite-related compounds with oxygen defects in the Ca_2Si_2O_6- Ca_2Al_2O_5 join2009

    • Author(s)
      H. Kojitani, Y. Wakabayashi, Y. Tejima, C. Kato, M. Haraguchi, M. Akaogi
    • Journal Title

      Physics of the Earth and Planetary Interiors 173

      Pages: 349-353

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] High-pressure transitions in MgAl_2O_4 and a new high-pressure phase of Mg_2Al_2O_52009

    • Author(s)
      A. Enomoto, H. Kojitani, M. Akaogi, H. Miura, H. Yusa
    • Journal Title

      Journal of Solid State Chemistry 183

      Pages: 389-395

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] High-pressure phase relations and thermodynamic properties of CaAl_4Si_2O_<11> CAS phase2009

    • Author(s)
      M. Akaogi, M. Haraguchi, M. Yaguchi, H. Kojitani
    • Journal Title

      Physics of the Earth and Planetary Interiors 173

      Pages: 1-6

    • Related Report
      2008 Annual Research Report 2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] High-pressure phase relations in Ca_2AlSiO_<5.5> and energetics of perovskite-related compounds with oxygen defects in the Ca_2Si_2O_6-Ca_2Al_2O_5 join2009

    • Author(s)
      H. Kojitani, Y. Wakabayashi, Y. Tejima, C. Kato, M. Haraguchi, M. Akaogi
    • Journal Title

      Physics of the Earth and Planetary Interiors 173

      Pages: 349-353

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] High-pressure transitions in MgAl_2O_4 and a new high-pressure phase of Mg_2Al_2O_52009

    • Author(s)
      A. Enomoto, H. Kojitani, M. Akaogi, H. Miura, H. Yusa
    • Journal Title

      Journal of Solid State Chemistry 182

      Pages: 389-395

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] High-pressure phase relations and thermodynamic properties of hexagonal aluminous phase and calcium-ferrite phase in the systems NaAlSiO_4-MgAl_2O_4 and CaAl_2O_4-MgAl_2O_42008

    • Author(s)
      A. Ono, M. Akaogi, H. Kojitani, K. Yamashita, M. Kobayashi,
    • Journal Title

      Physics of the Earth and Planetary Interiors Doi : 10.1016/j.pepi.2008.07.028

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] High-pressure phase relations and thermodynamic properties of hexagonal aluminous phase and calcium-ferrite phase in the systems NaAlSiO_4-MgAl_2O_4 and CaAl_2O_4-MgAl2042008

    • Author(s)
      A. Ono, M. Akaogi, H. Kojitani, K. Yamashita, M. Kobayashi
    • Journal Title

      Physics of the Earth and Planetary Interiors

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] High-pressure phase relations and crystal chemistry of calcium ferrite-type solid solutions in the system MgAl_2O_4-Mg_2SiO_42007

    • Author(s)
      H. Kojitani, R. Hisatomi, M. Akaogi
    • Journal Title

      American Mineralogist 92

      Pages: 1112-1118

    • Related Report
      2008 Final Research Report
  • [Journal Article] High-pressure phase relations and crystal chemistry of calcium ferrite-type solid solutions in the system MgAl_2O_4-Mg_2SiO_42007

    • Author(s)
      Hiroshi Kojitani
    • Journal Title

      American Mineralogist 92

      Pages: 1112-1118

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Aluminum substitution mechanisms in perovskite-type MgSiO3:an investigation by Rietveld analysis2007

    • Author(s)
      Hiroshi Kojitani
    • Journal Title

      Physics and Chemistry of Minerals 34

      Pages: 257-267

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Aluminum substitution mechanisms in perovskite-type MgSiO_3 : An investigation by Rietveld analysis2007

    • Author(s)
      Hiroshi Kojitani, Tomoo Katsura, Masaki Akaogi
    • Journal Title

      Physics and Chemistry of Minerals (in press)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] High-pressure phase relations and crystal chemistry of calcium ferrite-type solid solutions in the system MgAl_2O_4-Mg_2SiO_42007

    • Author(s)
      Hiroshi Kojitani, Ruosuke Hisatomi, Masaki Akaogi
    • Journal Title

      American Mineralogist (in press)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Aluminum substitution in stishovite and MgSiO_3 perovskite : High-resolution ~<27>Al NMR2006

    • Author(s)
      J.F.Stebbins, L.S.Du, K.Kelsey, H.Kojitani, M.Akaogi, S.Ono
    • Journal Title

      American Mineralogist 91

      Pages: 337-343

    • Related Report
      2006 Annual Research Report
  • [Presentation] A New High-pressure Phase with Mg_2Al_2O_5 Composition, American Geophysical Union2008

    • Author(s)
      H. Kojitani
    • Organizer
      2008 Fall meeting
    • Place of Presentation
      Moscone Center, San Francisco, U.S.A.
    • Year and Date
      2008-12-19
    • Related Report
      2008 Final Research Report
  • [Presentation] A New High-pressure Phase with Mg_2Al_2O_5 Composition2008

    • Author(s)
      H. Kojitani, A. Enomoto, S. Tsukamoto, M. Akaogi
    • Organizer
      American Geophysical Union 2008 Fall Meeting
    • Place of Presentation
      Moscone Center, San Francisco, U.S.A.
    • Year and Date
      2008-12-19
    • Related Report
      2008 Annual Research Report
  • [Presentation] Mg_2Al_2O_5組成を持つ新高圧相の結晶構造2008

    • Author(s)
      糀谷浩
    • Organizer
      第49回高圧討論会
    • Place of Presentation
      姫路商工会議所
    • Year and Date
      2008-11-14
    • Related Report
      2008 Annual Research Report 2008 Final Research Report
  • [Presentation] MgAl_2O_4-NaAlSiO_4系の高圧相平衡 : カルシウムフェライト相と六方晶相の関係2008

    • Author(s)
      赤荻正樹
    • Organizer
      第49回高圧討論会
    • Place of Presentation
      姫路商工会議所
    • Year and Date
      2008-11-13
    • Related Report
      2008 Annual Research Report 2008 Final Research Report
  • [Presentation] CaAl_4Si_2O_<11>-NaAl_3Si_3O_<11>系CAS固溶体の高温高圧実駅及び熱量測定2008

    • Author(s)
      原口摩衣子
    • Organizer
      第49回高圧討論会
    • Place of Presentation
      姫路商工会議所
    • Year and Date
      2008-11-12
    • Related Report
      2008 Final Research Report
  • [Presentation] Na, Mgを含むカルシウムフェライト型及びガーネット型酸塩高圧相2008

    • Author(s)
      塚本翔一
    • Organizer
      第49回高圧討論会
    • Place of Presentation
      姫路商工会議所
    • Year and Date
      2008-11-12
    • Related Report
      2008 Final Research Report
  • [Presentation] CaAl_4Si_2O_<11>-NaAl_3Si_3O_<11>系CAS固溶体の高温高圧実験及び熱量測定2008

    • Author(s)
      原口摩衣子, 中西浩太, 糀谷浩, 赤荻正樹
    • Organizer
      第49回高圧討論会
    • Place of Presentation
      姫路商工会議所
    • Year and Date
      2008-11-12
    • Related Report
      2008 Annual Research Report
  • [Presentation] Na, Mgを含むカルシウムフェライト型及びガーネット型珪酸塩高圧相2008

    • Author(s)
      塚本翔一, 糀谷浩, 赤荻正樹
    • Organizer
      第49回高圧討論会
    • Place of Presentation
      姫路商工会議所
    • Year and Date
      2008-11-12
    • Related Report
      2008 Annual Research Report
  • [Presentation] 新Mg_2Al_2O_5高圧相の結晶構造モデル2008

    • Author(s)
      糀谷浩
    • Organizer
      日本鉱物科学会
    • Place of Presentation
      秋田大学手形キャンパス
    • Year and Date
      2008-09-22
    • Related Report
      2008 Final Research Report
  • [Presentation] CaO-Al_2O_3-SiO_2系CAS相の高圧安定領域2008

    • Author(s)
      赤荻正樹
    • Organizer
      日本鉱物科学会2008年年会
    • Place of Presentation
      秋田大学手形キャンパス
    • Year and Date
      2008-09-22
    • Related Report
      2008 Annual Research Report 2008 Final Research Report
  • [Presentation] 新Mg_2Al_2O_5高圧相の結晶構造モデル2008

    • Author(s)
      糀谷浩, 榎本彰人, 赤荻正樹
    • Organizer
      日本鉱物科学会2008年年会
    • Place of Presentation
      秋田大学手形キャンパス
    • Year and Date
      2008-09-22
    • Related Report
      2008 Annual Research Report
  • [Presentation] MgAl_2O_4の高圧相転移2008

    • Author(s)
      榎本彰人
    • Organizer
      本地球惑星科学連合2008年大会
    • Place of Presentation
      幕張メッセ国際会議場
    • Year and Date
      2008-05-25
    • Related Report
      2008 Final Research Report
  • [Presentation] MgAl_2O_4の高圧相転移2008

    • Author(s)
      榎本彰人, 糀谷浩, 赤荻正樹
    • Organizer
      日本地球惑星科学連合2008年大会
    • Place of Presentation
      幕張メッセ交際会議場
    • Year and Date
      2008-05-25
    • Related Report
      2008 Annual Research Report
  • [Presentation] MgAl_2O_4の高温高圧相転移2007

    • Author(s)
      榎本彰人
    • Organizer
      第48回高圧討論会
    • Place of Presentation
      倉吉パークスクエア
    • Year and Date
      2007-11-20
    • Related Report
      2008 Final Research Report
  • [Presentation] 高温高圧実験及び熱量測定によるCaAl_4Si_2O_<11>の高圧相平衡関係2007

    • Author(s)
      原口摩衣子
    • Organizer
      第48回高圧討論会
    • Place of Presentation
      倉吉パークスクエア
    • Year and Date
      2007-11-20
    • Related Report
      2008 Final Research Report
  • [Presentation] MgAl_2O_4の高温高圧相転移2007

    • Author(s)
      榎本 彰人
    • Organizer
      高圧討論会
    • Place of Presentation
      倉吉パークスクエア
    • Year and Date
      2007-11-20
    • Related Report
      2007 Annual Research Report
  • [Presentation] 高温高圧実験及び熱量測定によるCaAl_4Si_2O_<11>の高圧相平衡関係2007

    • Author(s)
      原口 摩依子
    • Organizer
      高圧討論会
    • Place of Presentation
      倉吉パークスクエア
    • Year and Date
      2007-11-20
    • Related Report
      2007 Annual Research Report
  • [Presentation] Ca_2AlSiO_<5.5>組成を持つ新高圧相の結晶構造モデル2007

    • Author(s)
      糀谷浩
    • Organizer
      日本鉱物学会2007年度年会
    • Place of Presentation
      東京大学本郷キャンパシ
    • Year and Date
      2007-09-23
    • Related Report
      2008 Final Research Report
  • [Presentation] CaSiO_3-CaAlO_<2.5>系における高圧相関係および酸素欠陥を伴うペロブスカイト関連化合物の熱量測定2007

    • Author(s)
      糀谷浩
    • Organizer
      日本地球惑星科学連合大会
    • Place of Presentation
      幕張メッセ国際会議場
    • Year and Date
      2007-05-20
    • Related Report
      2008 Final Research Report 2007 Annual Research Report

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Published: 2006-04-01   Modified: 2016-04-21  

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