Инд. авторы:	Litasov K.D., Shatskiy A., Gavryushkin P.N., Sharygin I.S., Dorogokupets P.I., Dymshits A.M., Ohtani E., Higo Y., Funakoshi K.
Заглавие:	P-V-T equation of state of siderite to 33GPa and 1673K
Библ. ссылка:	Litasov K.D., Shatskiy A., Gavryushkin P.N., Sharygin I.S., Dorogokupets P.I., Dymshits A.M., Ohtani E., Higo Y., Funakoshi K. P-V-T equation of state of siderite to 33GPa and 1673K // Physics of the Earth and Planetary Interiors. - 2013. - Vol.224. - P.83-87. - ISSN 0031-9201. - EISSN 1872-7395.
Внешние системы:	WoS: 000327232200008; SCOPUS: 2-s2.0-84886237170; DOI: 10.1016/j.pepi.2013.07.011;
Реферат:	eng: Pressure-volume-temperature relations have been measured to 33GPa and 1673K for natural siderite (Fe0.95Mn0.05CO3) using synchrotron X-ray diffraction with a multianvil apparatus at the 'SPring-8' facility. A least-squares fit of the room-temperature compression data to a third-order Birch-Murnaghan equation of state (EOS) yielded K0=120±1GPa and K'=3.57±0.09, with fixed V0=293.4±0.1Å3. Further analysis of the high-temperature compression data yielded the temperature derivative of the bulk modulus (∂ KT/∂T)P=-0.015±0.001GPa/K and zero-pressure thermal expansion α=a0+a1T with a0=3.57(9)×10-5K-1 and a1=0.06(14)×10-8K-2. The analysis of axial compressibility indicates that the c-axis is more compressible (KTc=59±1GPa at K'=2.7±0.1) than the a-axis (KTa=166±2GPa at K'=14.0±0.8). The present thermal EOS enables accurate calculation the density and thermodynamic properties of siderite to the deep mantle conditions. © 2013 Elsevier B.V.
Ключевые слова:	X-ray diffraction; volume; thermodynamics; siderite; mantle structure; least squares method; high temperature; high pressure; experimental mineralogy; equation of state; carbonate; Iron ores; X ray diffraction; Thermal expansion; Synchrotron radiation; Equations of state of solids; Data compression; Carbonates; Temperature derivatives; Synchrotron x ray diffraction; Siderite; Pressure-volume-temperatures; Mantle; High-temperature compression; Equation of state; Birch-Murnaghan equation of state; Synchrotron X-ray diffraction; Siderite; Mantle; Equation of state; compressibility; density; Carbonate;
Издано:	2013
Физ. характеристика:	с.83-87