搜索结果: 1-14 共查到“矿床学与矿相学 MgSiO3”相关记录14条 . 查询时间(0.109 秒)
Symmetry change of majorite solid-solution in the system Mg3Al2Si3O12-MgSiO3
single crystals majorite solid-solution Mg3Al2Si3O12-MgSiO3
2012/3/31
Six single crystals of Mg (Mg Si Al )Si O with x = 0.05, 0.13, 0.24, 0.38, 0.52, and 0.64 (the
3 x x 2(R)Cx 3 12
majorite solid-solution) were synthesized at 20 GPa and 2000 ?C with a °∞6-8°± type ...
The single-crystal elastic moduli of the MgSiO orthoenstatite end-member have been measured
by Brillouin spectroscopy at ambient conditions. The aggregate elastic moduli at 1 atm are K
107.6(15) GP...
Estimates of mantle relevant Clapeyron slopes in the MgSiO3 system from high-pressure spectroscopic data
MgSiO3 high-pressure spectroscopic data
2012/3/30
ThephasediagramforMgSiO wasestimatedusingtheentropy,enthalpy,thermalex-3
pansivity,andvolumesofallthephases.Entropyatthevarious P-T conditionsinthephase
diagramwasestimatedusingstatisticalthermodyna...
Equation of state of MgSiO3 with the perovskite structure based on experimental measurements
MgSiO3 experimental measurement perovskite structure
2012/3/30
WestudiedMgSiO withtheperovskitestructureheatedtotemperaturesupto1500K3
atpressuresbetween36and110GPawithin-situX-raydiffraction.Thenewpressure-
volume-temperature(P-V-T)datawerecombinedwithliteratu...
Shifts in thermal expansivity with Fe content for solid solutions of MgSiO3-FeSiO3 with the perovskite structure
MgSiO3-FeSiO3 perovskite structure
2012/3/30
ThisstudypresentsevidencethatforasolidsolutionofMgFe SiO perovskite,the
x x-1 3
shiftinvolumethermalexpansivity,,issmallastheindex x ischanged.Accordingto
dataobtainedtheoreticallybyHamaandSuito(19...
Local structure analysis of Al-containing magnesium silicate perovskite has been carried out with X-ray absorption spectra recorded at the Mg, Al, and Si K -edges using the SA32 beam-line of SuperAco ...
Molecular dynamics simulations of phase transitions and melting in perovskite MgSiO3 at mantle pressures
Molecular dynamics simulations phase transitions MgSiO3
2012/4/1
The high pressure phase transitions and melting of the mantle mineral MgSiO3 with the perovskite structure were investigated using molecular dynamics (MD) simulations of a large system of atoms on a p...
Sound velocities of polycrystalline MgSiO3 -orthopyroxene to 10 GPa at room temperature
Sound velocities polycrystalline MgSiO3 -orthopyroxene temperature
2012/3/31
A polycrystalline sample of MgSiO3-orthopyroxene was hot pressed at a pressure of 4 GPa and temperature of 975 8 C in a multi-anvil apparatus. The recovered specimen has a bulk density within 1% of th...
Thermoelastic properties of MgSiO3 perovskite as the Debye approach
Thermoelastic properties MgSiO3 perovskite
2012/3/30
MgSiO 3 perovskite is shown to be a Debye-like mineral by the determination of specific heat, CV, entropy, S, and thermal pressure, D P Th, using the Debye theory up to 1800 K.Sound velocities and bul...
Thermal expansion of MgSiO3 and FeSiO3 ortho- and clinopyroxenes
Thermal expansion MgSiO3 FeSiO3 ortho- clinopyroxenes
2012/4/5
Unit-cellparametersofsynthetic(Mg,Fe)SiO ortho-andclinopyroxenesweredeter-minedatregularintervalsinthetemperaturerange293¤C1094KusingpowderX-ra
diffractiontechniques.Volumethermalexpansioncoef?cients...
Elastic properties of orthorhombic MgSiO3 perovskite at lower mantle pressures
Elastic properties orthorhombic MgSiO3 perovskite lower mantle pressures
2012/4/5
ThefullelasticconstanttensoroforthorhombicMgSiO perovskitehasbeendetermined
from?rstprinciplesforthe?rsttimeathighpressureusingtheplane-wavepseudopotential
method.Theathermalelasticmoduli,determined...
High-pressure, high-temperature Raman spectroscopic study of ilmenite-type MgSiO3
High-pressure high-temperature Raman spectroscopic study ilmenite-type MgSiO3
2012/4/6
High-pressure and high-temperature Raman spectra ofilmenite-type MgSi03have been collected up to 7 GPa and 1030 K,respectively. The observed Raman frequency shifts withpressure and temperature wereuse...
A pressure-induced phase transition in MgSiO3-rich garnet revealed by Raman spectroscopy
pressure-induced phase transition MgSiO3-rich garnet Raman spectroscopy
2012/4/6
Raman spectra oftwo synthetic, noncubic garnet samples rich in MgSi03component weremeasuredin adiamond-anvil cellto 200kbar atroom temperature. Sample1was pure MgSi03majorite;sample 2wasa solid soluti...
High-pressure X-ray diffraction study and equation of state of MgSiO3 ilmenite
High-pressure X-ray diffraction study equation of state of MgSiO3 ilmenite
2012/4/5
High-pressure X-ray powder diffraction data for MgSi03ilmenite have been collected up to 28 GPa using a diamond-anvil cell in an energy-dispersive configuration at the storage ring DCI at the LURE (Or...
