Ferric Iron in Lower Mantle Phases

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Experiments in the system MgO-FeO-SiO<SUB>2</SUB> have been the foundation of current beliefs that iron partitions preferentially into (Mg, Fe) O relative to the Mg-perovskite phase and occurs nearly all as Fe<SUP>2+</SUP>. Recent experiments in the system MgO-FeO-SiO<SUB>2</SUB>-Al<SUB>2</SUB>O<SUB>3</SUB>, however, show that (1) the presence of small amounts of Al stabilises Fe<SUP>3+</SUP> in (Mg, Fe) SiO<SUB>3</SUB> perovskite to values exceeding 50% Fe<SUP>3+</SUP>/·Fe; and (2) the solubility of Fe<SUP>3+</SUP> in (Mg, Fe) O is extremely low at high P, T, regardless of oxygen fugacity. These results have important implications for physical and chemical properties of the lower mantle.

収録刊行物

  • 高圧力の科学と技術 = The Review of high pressure science and technology

    高圧力の科学と技術 = The Review of high pressure science and technology 7, 62-65, 1998

    The Japan Society of High Pressure Science and Technology

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各種コード

  • NII論文ID(NAID)
    10002688759
  • NII書誌ID(NCID)
    AN10452913
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    0917639X
  • NDL 記事登録ID
    4493836
  • NDL 雑誌分類
    ZP1(科学技術--化学・化学工業)
  • NDL 請求記号
    Z17-1589
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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