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High-pressure experiments on phase transition boundaries between corundum, Rh2O3(II)- and CaIrO3-type structures in Al2O3

  • Jinya Kato , Kei Hirose EMAIL logo , Haruka Ozawa and Yasuo Ohishi
Published/Copyright: March 7, 2015
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American Mineralogist
From the journal American Mineralogist Volume 98 Issue 2-3

Abstract

Phase transitions in Al2O3 between corundum Rh2O3(II)-type and CaIrO3-type (post-perovskitetype) phases were examined at high pressure and high temperature in a laser-heated diamond-anvil cell (DAC) based on in situ X-ray diffraction measurements. The locations of corundum-Rh2O3(II) and Rh2O3(II)-CaIrO3 boundaries were precisely determined by conducting both forward and backward reaction experiments. The results demonstrate that corundum undergoes a phase transition to Rh2O3(II)-type structure above 106 GPa at 1800 K with a negative Clapeyron slope of -6.5 ± 1.5 MPa/K, generally consistent with earlier experimental and theoretical works. The Rh2O3(II)-type phase further transforms into CaIrO3-type above 170 GPa at 2300 K, indicating the transition pressure much higher than earlier experimental work but in agreement with reported GGA calculations. The Clapeyron slope of this phase transition was found to be high negative (-20 ± 5 MPa/K).

Keywords : Phase transition; high pressure; Al2O3; corundum; Rh2O3; CaIrO3; post-perovskite
Received: 2012-2-17
Accepted: 2012-9-24
Published Online: 2015-3-7
Published in Print: 2013-2-1

© 2015 by Walter de Gruyter Berlin/Boston

Articles in the same Issue

  1. Pressure-induced structural transformations in the low-cristobalite form of AlPO4
  2. Hydrokenomicrolite, (□,H2O)2Ta2(O,OH)6(H2O), a new microlite-group mineral from Volta Grande pegmatite, Nazareno, Minas Gerais, Brazil
  3. Fluor-elbaite, Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F, a new mineral species of the tourmaline supergroup
  4. Microtexture development during rapid cooling in three rhyolitic lava flows
  5. Microbial and inorganic control on the composition of clay from volcanic glass alteration experiments
  6. High-pressure experiments on phase transition boundaries between corundum, Rh2O3(II)- and CaIrO3-type structures in Al2O3
  7. Electronic structure effects in the vectorial bond-valence model
  8. Geometric analysis of radiation damage connectivity in zircon, and its implications for helium diffusion
  9. Superstructure, crystal chemistry, and cation distribution in filipstadite, a Sb5+-bearing, spinel-related mineral
  10. A high-temperature Brillouin scattering study on four compositions of haplogranitic glasses and melts: High-frequency elastic behavior through the glass transition
  11. Hydrogen isotope fractionation between coexisting hydrous melt and silicate-saturated aqueous fluid: An experimental study in situ at high pressure and temperature
  12. Eclogitic clasts with omphacite and pyrope-rich garnet in the NWA 801 CR2 chondrite
  13. Hydration properties of synthetic high-charge micas saturated with different cations: An experimental approach
  14. Quantitative analyses of powdered multi-minerallic carbonate aggregates using a portable Raman spectrometer
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  16. Coexisting pseudobrookite, ilmenite, and titanomagnetite in hornblende andesite of the Coleman Pinnacle flow, Mount Baker, Washington: Evidence for a highly oxidized arc magma
  17. Geochemistry of pyrochlore minerals from the Motzfeldt Center, South Greenland: The mineralogy of a syenite-hosted Ta, Nb deposit
  18. Phosphovanadylite-Ca, Ca[V4 4+P2O8(OH)8]·12H2O, the Ca analogue of phosphovanadylite-Ba
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  20. Prewittite, KPb1.5Cu6Zn(SeO3)2O2Cl10, a new mineral from Tolbachik fumaroles, Kamchatka peninsula, Russia: Description and crystal structure
  21. Lucabindiite, (K,NH4)As4O6(Cl,Br), a new fumarole mineral from the “La Fossa” crater at Vulcano, Aeolian Islands, Italy
  22. Scottyite, the natural analog of synthetic BaCu2Si2O7, a new mineral from the Wessels mine, Kalahari Manganese Fields, South Africa
  23. Oxy-schorl, Na(Fe2 2+Al)Al6Si6O18(BO3)3(OH)3O, a new mineral from Zlatá Idka, Slovak Republic and Přibyslavice, Czech Republic
  24. Crystal chemistry and hydrogen bonding of rustumite Ca10(Si2O7)2(SiO4)(OH)2Cl2 with variable OH, Cl, F
  25. Oxy-vanadium-dravite, NaV3(V4Mg2)(Si6O18)(BO3)3(OH)3O: Crystal structure and redefinition of the “vanadium-dravite” tourmaline
  26. Lead-tellurium oxysalts from Otto Mountain near Baker, California: VIII. Fuettererite, Pb3Cu2+ 6 Te6+O6(OH)7Cl5, a new mineral with double spangolite-type sheets
  27. Lead-tellurium oxysalts from Otto Mountain near Baker, California: IX. Agaite, Pb3Cu2+Te6+O5(OH)2(CO3), a new mineral with CuO5-TeO6 polyhedral sheets
  28. Letter: Actinides in Geology, Energy, and the Environment. Evidence for nanocrystals of vorlanite, a rare uranate mineral, in the Nopal I low-temperature uranium deposit (Sierra Peña Blanca, Mexico)
https://doi.org/10.2138/am.2013.4133
Keywords for this article
Phase transition; high pressure; Al2O3; corundum; Rh2O3; CaIrO3; post-perovskite

Articles in the same Issue

  1. Pressure-induced structural transformations in the low-cristobalite form of AlPO4
  2. Hydrokenomicrolite, (□,H2O)2Ta2(O,OH)6(H2O), a new microlite-group mineral from Volta Grande pegmatite, Nazareno, Minas Gerais, Brazil
  3. Fluor-elbaite, Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F, a new mineral species of the tourmaline supergroup
  4. Microtexture development during rapid cooling in three rhyolitic lava flows
  5. Microbial and inorganic control on the composition of clay from volcanic glass alteration experiments
  6. High-pressure experiments on phase transition boundaries between corundum, Rh2O3(II)- and CaIrO3-type structures in Al2O3
  7. Electronic structure effects in the vectorial bond-valence model
  8. Geometric analysis of radiation damage connectivity in zircon, and its implications for helium diffusion
  9. Superstructure, crystal chemistry, and cation distribution in filipstadite, a Sb5+-bearing, spinel-related mineral
  10. A high-temperature Brillouin scattering study on four compositions of haplogranitic glasses and melts: High-frequency elastic behavior through the glass transition
  11. Hydrogen isotope fractionation between coexisting hydrous melt and silicate-saturated aqueous fluid: An experimental study in situ at high pressure and temperature
  12. Eclogitic clasts with omphacite and pyrope-rich garnet in the NWA 801 CR2 chondrite
  13. Hydration properties of synthetic high-charge micas saturated with different cations: An experimental approach
  14. Quantitative analyses of powdered multi-minerallic carbonate aggregates using a portable Raman spectrometer
  15. Periodic ab initio bulk investigation of hydroxylapatite and type A carbonated apatite with both pseudopotential and all-electron basis sets for calcium atoms
  16. Coexisting pseudobrookite, ilmenite, and titanomagnetite in hornblende andesite of the Coleman Pinnacle flow, Mount Baker, Washington: Evidence for a highly oxidized arc magma
  17. Geochemistry of pyrochlore minerals from the Motzfeldt Center, South Greenland: The mineralogy of a syenite-hosted Ta, Nb deposit
  18. Phosphovanadylite-Ca, Ca[V4 4+P2O8(OH)8]·12H2O, the Ca analogue of phosphovanadylite-Ba
  19. The relationship between REE-Y-Nb-Th minerals and the evolution of an A-type granite, Wentworth Pluton, Nova Scotia
  20. Prewittite, KPb1.5Cu6Zn(SeO3)2O2Cl10, a new mineral from Tolbachik fumaroles, Kamchatka peninsula, Russia: Description and crystal structure
  21. Lucabindiite, (K,NH4)As4O6(Cl,Br), a new fumarole mineral from the “La Fossa” crater at Vulcano, Aeolian Islands, Italy
  22. Scottyite, the natural analog of synthetic BaCu2Si2O7, a new mineral from the Wessels mine, Kalahari Manganese Fields, South Africa
  23. Oxy-schorl, Na(Fe2 2+Al)Al6Si6O18(BO3)3(OH)3O, a new mineral from Zlatá Idka, Slovak Republic and Přibyslavice, Czech Republic
  24. Crystal chemistry and hydrogen bonding of rustumite Ca10(Si2O7)2(SiO4)(OH)2Cl2 with variable OH, Cl, F
  25. Oxy-vanadium-dravite, NaV3(V4Mg2)(Si6O18)(BO3)3(OH)3O: Crystal structure and redefinition of the “vanadium-dravite” tourmaline
  26. Lead-tellurium oxysalts from Otto Mountain near Baker, California: VIII. Fuettererite, Pb3Cu2+ 6 Te6+O6(OH)7Cl5, a new mineral with double spangolite-type sheets
  27. Lead-tellurium oxysalts from Otto Mountain near Baker, California: IX. Agaite, Pb3Cu2+Te6+O5(OH)2(CO3), a new mineral with CuO5-TeO6 polyhedral sheets
  28. Letter: Actinides in Geology, Energy, and the Environment. Evidence for nanocrystals of vorlanite, a rare uranate mineral, in the Nopal I low-temperature uranium deposit (Sierra Peña Blanca, Mexico)
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