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Equation of state of stishovite to lower mantle pressures

  • Denis Andrault EMAIL logo , Ross J. Angel , Jed L. Mosenfelder and Tristan Le Bihan
Published/Copyright: March 31, 2015
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American Mineralogist
From the journal American Mineralogist Volume 88 Issue 2-3

Abstract

We performed new diffraction experiments to clarify the equation of state (EoS) of stishovite after we suspected systematic errors in previous experimental reports. Using diamond anvil cells, we repeated both single-crystal X-ray diffraction measurements under hydrostatic conditions and powder diffraction measurements using the laser-annealing technique and NaCl pressure medium. The major improvement is the increase in precision of the pressure determination using the quartz and NaCl equations of state. Using both sets of data, the stishovite bulk moduli were refined to K0 = 309.9(1.1) GPa and K'0 = 4.59(0.23). We also reinvestigated the mechanism of the phase transformation to the CaCl2-structured polymorph of SiO2 at about 60 GPa. We confirm no volume discontinuity at the transition pressure, but the CaCl2 form appears slightly more compressible than the rutile-structured form of SiO2. This change in compression behavior is used for quantitative analyses of the spontaneous strains of the pressure-induced phase transition.

Received: 2002-3-22
Accepted: 2002-11-13
Published Online: 2015-3-31
Published in Print: 2003-2-1

© 2015 by Walter de Gruyter Berlin/Boston

Articles in the same Issue

  1. Structure, metal-insulator transitions, and magnetic properties of FeO at high pressures
  2. The high-temperature behavior of defect hydrogen species in quartz: Implications for hydrogen isotope studies
  3. Thermal stability and vibrational spectra of the sheet borate tuzlaite, NaCa[B5O8(OH)2]·3H2O
  4. Hydrogen-bonded water in laumontite I: X-ray powder diffraction study of water site occupancy and structural changes in laumontite during room-temperature isothermal hydration/dehydration
  5. In-situ determination of mineral solubilities in fluids using a hydrothermal diamond-anvil cell and SR-XRF: Solubility of AgCl in water
  6. Pressure-induced phase transition in malayaite, CaSnOSiO4
  7. Equation of state of stishovite to lower mantle pressures
  8. Chemical transfer during redox exchanges between H2 and Fe-bearing silicate melts
  9. Trace-element partitioning between alkali feldspar and peralkalic quartz trachyte to rhyolite magma. Part I: Systematics of trace-element partitioning
  10. Trace-element partitioning between alkali feldspar and peralkalic quartz trachyte to rhyolite magma. Part II: Empirical equations for calculating trace-element partition coefficients of large-ion lithophile, high field-strength, and rare-earth elements
  11. Four generations of accessory-phase growth in low-pressure migmatites from SW New Hampshire
  12. Mineralogy, chemistry, and formation of oxidized biotite in the weathering profile of granitic rocks
  13. Experimental study of zircon coarsening in quartzite ±H2O at 1.0 GPa and 1000 ℃, with implications for geochronological studies of high-grade metamorphism
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  15. Fe2+ -Mg partitioning between garnet, magnesiowüstite, and (Mg,Fe)2SiO4 phases of the transition zone
  16. Interlayer structure and dynamics of Cl-bearing hydrotalcite: far infrared spectroscopy and molecular dynamics modeling
  17. Si-Al disorder and solid solutions in analcime, chabazite, and wairakite
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  20. Ab initio investigation of the structures of NaOH hydrates and their Na+ and OH– coordination polyhedra
  21. Another step toward understanding the true nature of sartorite: Determination and refinement of a ninefold superstructure
  22. Letter. Ultrapotassic clinopyroxene from the Kumdy-Kol microdiamond mine, Kokchetav Complex, Kazakhstan: Occurrence, composition and crystal-chemical characterization
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https://doi.org/10.2138/am-2003-2-307

Articles in the same Issue

  1. Structure, metal-insulator transitions, and magnetic properties of FeO at high pressures
  2. The high-temperature behavior of defect hydrogen species in quartz: Implications for hydrogen isotope studies
  3. Thermal stability and vibrational spectra of the sheet borate tuzlaite, NaCa[B5O8(OH)2]·3H2O
  4. Hydrogen-bonded water in laumontite I: X-ray powder diffraction study of water site occupancy and structural changes in laumontite during room-temperature isothermal hydration/dehydration
  5. In-situ determination of mineral solubilities in fluids using a hydrothermal diamond-anvil cell and SR-XRF: Solubility of AgCl in water
  6. Pressure-induced phase transition in malayaite, CaSnOSiO4
  7. Equation of state of stishovite to lower mantle pressures
  8. Chemical transfer during redox exchanges between H2 and Fe-bearing silicate melts
  9. Trace-element partitioning between alkali feldspar and peralkalic quartz trachyte to rhyolite magma. Part I: Systematics of trace-element partitioning
  10. Trace-element partitioning between alkali feldspar and peralkalic quartz trachyte to rhyolite magma. Part II: Empirical equations for calculating trace-element partition coefficients of large-ion lithophile, high field-strength, and rare-earth elements
  11. Four generations of accessory-phase growth in low-pressure migmatites from SW New Hampshire
  12. Mineralogy, chemistry, and formation of oxidized biotite in the weathering profile of granitic rocks
  13. Experimental study of zircon coarsening in quartzite ±H2O at 1.0 GPa and 1000 ℃, with implications for geochronological studies of high-grade metamorphism
  14. Biotite dissolution processes and mechanisms in the laboratory and in nature: Early stage weathering environment and vermiculitization
  15. Fe2+ -Mg partitioning between garnet, magnesiowüstite, and (Mg,Fe)2SiO4 phases of the transition zone
  16. Interlayer structure and dynamics of Cl-bearing hydrotalcite: far infrared spectroscopy and molecular dynamics modeling
  17. Si-Al disorder and solid solutions in analcime, chabazite, and wairakite
  18. Cafetite, Ca[Ti2O5](H2O): Crystal structure and revision of chemical formula
  19. Order-disorder approach to calcioaravaipaite, [PbCa2Al(F,OH)9]: The crystal structure of the triclinic MDO polytype
  20. Ab initio investigation of the structures of NaOH hydrates and their Na+ and OH– coordination polyhedra
  21. Another step toward understanding the true nature of sartorite: Determination and refinement of a ninefold superstructure
  22. Letter. Ultrapotassic clinopyroxene from the Kumdy-Kol microdiamond mine, Kokchetav Complex, Kazakhstan: Occurrence, composition and crystal-chemical characterization
  23. Letter. Determination of planetary basalt parentage: A simple technique using the electron microprobe
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