Article
Licensed
Unlicensed
Requires Authentication
A new cubic perovskite in PbGeO3 at high pressures
-
Wansheng Xiao
,
Dayong Tan
Published/Copyright:
April 2, 2015
Abstract
A new cubic perovskite polymorph of PbGeO3 (Phase II) was synthesized by laser heating in the diamond-anvil cell (DAC) at the pressure of 36 GPa. Fitting the Birch-Murnaghan equation of state against its observed P-V data yields a bulk modulus K0 of 196(6) GPa and the volume V0 of 56.70(13) Å3 when K0′ is assumed being 4. After the pressure is released, the PbGeO3 Phase II changes gradually into an amorphous phase, which contains mainly fourfold-coordinated germanium. It indicates that the PbGeO3 Phase II with a GeO6 octahedron framework transforms to a GeO4 tetrahedron network during the amorphization. The existence of PbGeO3 cubic perovskite Phase II at high pressures indicates that the polarized character of the Pb2+ ion induced by its 6s2 lone pair electrons would be totally reduced in the environment of major silicate perovskites inside the lower mantle, and thus the Pb atom would substitute the Ca atom to enter the CaSiO3 perovskite.
Received: 2011-10-9
Accepted: 2012-3-26
Published Online: 2015-4-2
Published in Print: 2012-7-1
© 2015 by Walter de Gruyter Berlin/Boston
You are currently not able to access this content.
You are currently not able to access this content.
Articles in the same Issue
- Mercury (Hg) mineral evolution: A mineralogical record of supercontinent assembly, changing ocean geochemistry, and the emerging terrestrial biosphere
- The 3.65 Å phase, MgSi(OH)6: Structural insights from DFT-calculations and T-dependent IR spectroscopy
- Vertical zonation of the Barcroft granodiorite, White Mountains, California: Implications for magmatic processes
- Minerals in cement chemistry: A single-crystal neutron diffraction and Raman spectroscopic study of thaumasite, Ca3Si(OH)6(CO3)(SO4)·12H2O
- A new high-pressure phase transition in natural Fe-bearing orthoenstatite
- Aluminum solubility in TiO2 rutile at high pressure and experimental evidence for a CaCl2-structured polymorph
- First record and timing of UHP metamorphism from zircon in the Xitieshan terrane: Implications for the evolution of the entire North Qaidam metamorphic belt
- Lead in zircon at the atomic scale
- Characterization of fluor-chlorapatites by electron probe microanalysis with a focus on time-dependent intensity variation of halogens
- An inversion-based self-calibration for SIMS measurements: Application to H, F, and Cl in apatite
- Second boiling effects on the Al-content of hornblende rims from an exhumed Cretaceous arc pluton, Stewart Island, New Zealand
- Heat transfer in plagioclase feldspars
- Transport properties and equation of state of 1-bar eutectic melt in the system CaAl2Si2O8-CaMgSi2O6 by molecular dynamics simulation
- High-pressure behavior of zoisite
- A first-principle investigation of antigorite up to 30 GPa: Structural behavior under compression
- Reynoldsite, Pb2Mn4+2 O5(CrO4), a new phyllomanganate-chromate from the Blue Bell claims, California and the Red Lead mine, Tasmania
- A new cubic perovskite in PbGeO3 at high pressures
- Manganoquadratite, AgMnAsS3, a new manganese-bearing sulfosalt from the Uchucchacua polymetallic deposit, Lima Department, Peru: Description and crystal structure
- Leucostaurite, Pb2[B5O9]Cl·0.5H2O, from the Atacama Desert: The first Pb-dominant member of the hilgardite group, and micro-determination of boron in minerals by PIGE
- Synthetic LiAlGe2O6: The first pyroxene with P21/n symmetry
- Panguite, (Ti4+,Sc,Al,Mg,Zr,Ca)1.8O3, a new ultra-refractory titania mineral from the Allende meteorite: Synchrotron micro-diffraction and EBSD
- Buseckite, (Fe,Zn,Mn)S, a new mineral from the Zakłodzie meteorite
- Experimental calibration of the effect of H2O on plagioclase crystallization in basaltic melt at 200 MPa
- High-pressure and high-temperature titanium solution mechanisms in silicate-saturated aqueous fluids and hydrous silicate melts
- Thermodynamic behavior and properties of katoite (hydrogrossular): A calorimetric study
- Graphite in the martian meteorite Allan Hills 84001
Articles in the same Issue
- Mercury (Hg) mineral evolution: A mineralogical record of supercontinent assembly, changing ocean geochemistry, and the emerging terrestrial biosphere
- The 3.65 Å phase, MgSi(OH)6: Structural insights from DFT-calculations and T-dependent IR spectroscopy
- Vertical zonation of the Barcroft granodiorite, White Mountains, California: Implications for magmatic processes
- Minerals in cement chemistry: A single-crystal neutron diffraction and Raman spectroscopic study of thaumasite, Ca3Si(OH)6(CO3)(SO4)·12H2O
- A new high-pressure phase transition in natural Fe-bearing orthoenstatite
- Aluminum solubility in TiO2 rutile at high pressure and experimental evidence for a CaCl2-structured polymorph
- First record and timing of UHP metamorphism from zircon in the Xitieshan terrane: Implications for the evolution of the entire North Qaidam metamorphic belt
- Lead in zircon at the atomic scale
- Characterization of fluor-chlorapatites by electron probe microanalysis with a focus on time-dependent intensity variation of halogens
- An inversion-based self-calibration for SIMS measurements: Application to H, F, and Cl in apatite
- Second boiling effects on the Al-content of hornblende rims from an exhumed Cretaceous arc pluton, Stewart Island, New Zealand
- Heat transfer in plagioclase feldspars
- Transport properties and equation of state of 1-bar eutectic melt in the system CaAl2Si2O8-CaMgSi2O6 by molecular dynamics simulation
- High-pressure behavior of zoisite
- A first-principle investigation of antigorite up to 30 GPa: Structural behavior under compression
- Reynoldsite, Pb2Mn4+2 O5(CrO4), a new phyllomanganate-chromate from the Blue Bell claims, California and the Red Lead mine, Tasmania
- A new cubic perovskite in PbGeO3 at high pressures
- Manganoquadratite, AgMnAsS3, a new manganese-bearing sulfosalt from the Uchucchacua polymetallic deposit, Lima Department, Peru: Description and crystal structure
- Leucostaurite, Pb2[B5O9]Cl·0.5H2O, from the Atacama Desert: The first Pb-dominant member of the hilgardite group, and micro-determination of boron in minerals by PIGE
- Synthetic LiAlGe2O6: The first pyroxene with P21/n symmetry
- Panguite, (Ti4+,Sc,Al,Mg,Zr,Ca)1.8O3, a new ultra-refractory titania mineral from the Allende meteorite: Synchrotron micro-diffraction and EBSD
- Buseckite, (Fe,Zn,Mn)S, a new mineral from the Zakłodzie meteorite
- Experimental calibration of the effect of H2O on plagioclase crystallization in basaltic melt at 200 MPa
- High-pressure and high-temperature titanium solution mechanisms in silicate-saturated aqueous fluids and hydrous silicate melts
- Thermodynamic behavior and properties of katoite (hydrogrossular): A calorimetric study
- Graphite in the martian meteorite Allan Hills 84001
