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Minerals
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Minerals and Solids at High Temperature and High Pressure: Equations...
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Minerals and Solids at High Temperature and High Pressure: Equations of State and Thermodynamics

A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Crystallography and Physical Chemistry of Minerals & Nanominerals".

Deadline for manuscript submissions: closed (13 November 2020) | Viewed by 3832

Special Issue Editors

Dr. Peter I. Dorogokupets

E-Mail Website
Guest Editor
Institute of the Earth's crust, Russian Academy of Sciences (Siberian Branch), 664033 Irkutsk, Russia
Interests: equation of state; high pressure high temperature experiments; mineral physics at extreme conditions; elasticity; compressibility; PVT properties; ab initio calculation; phase diagrams
Dr. Anna M. Dymshits

E-Mail Website
Co-Guest Editor
Institute of the Earth's Crust, Russian Academy of Sciences (Siberian Branch), 664033 Irkutsk, Russia
Interests: mantle; high pressures and temperatures; xenoliths; phase transitions; equations of state; oxidation state; experiments
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Mineral physics studies provide key knowledge on thermodynamic properties of constituents of the Earth’s and planetary interiors. Equations of state (EoS) remain a resourceful and powerful tool to model and evaluate the thermodynamic behaviors of any physical–chemical system. EoS characterizes the state of matter of a material under a given set of physical conditions and may be used to describe gases, fluids, fluid mixtures, and solids. In mineral physics, an EoS is used to determine how the volume (or density) of a material vary as a function of pressure and temperature. It reflects the atomic structure, chemical bonding, and stability of a material. This information, combined with geophysical and geochemical observations, helps to constrain the structure and dynamics of the Earth and other planets.

This Special Issue aims to include a representative group of experimental and theoretical papers in the field of equations of state and thermodynamic properties of minerals (as well as melts, fluids, and rocks) at high pressures and temperatures.

Dr. Peter I. Dorogokupets
Dr. Anna M. Dymshits
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Minerals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • equation of state
  • high pressure high temperature experiments
  • mineral physics at extreme conditions

Published Papers (1 paper)

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Research

17 pages, 3228 KiB  
Article
Equations of State of Ca-Silicates and Phase Diagram of the CaSiO3 System under Upper Mantle Conditions
by Tatiana S. Sokolova and Peter I. Dorogokupets
Minerals 2021, 11(3), 322; https://doi.org/10.3390/min11030322 - 19 Mar 2021
Cited by 9 | Viewed by 3254
Abstract
The equations of state of different phases in the CaSiO3 system (wollastonite, pseudowollastonite, breyite (walstromite), larnite (Ca2SiO4), titanite-structured CaSi2O5 and CaSiO3-perovskite) are constructed using a thermodynamic model based on the Helmholtz free energy. [...] Read more.
The equations of state of different phases in the CaSiO3 system (wollastonite, pseudowollastonite, breyite (walstromite), larnite (Ca2SiO4), titanite-structured CaSi2O5 and CaSiO3-perovskite) are constructed using a thermodynamic model based on the Helmholtz free energy. We used known experimental measurements of heat capacity, enthalpy, and thermal expansion at zero pressure and high temperatures, and volume measurements at different pressures and temperatures for calculation of parameters of equations of state of studied Ca-silicates. The used thermodynamic model has allowed us to calculate a full set of thermodynamic properties (entropy, heat capacity, bulk moduli, thermal expansion, Gibbs energy, etc.) of Ca-silicates in a wide range of pressures and temperatures. The phase diagram of the CaSiO3 system is constructed at pressures up to 20 GPa and temperatures up to 2000 K and clarifies the phase boundaries of Ca-silicates under upper mantle conditions. The calculated wollastonite–breyite equilibrium line corresponds to equation P(GPa) = −4.7 × T(K) + 3.14. The calculated density and adiabatic bulk modulus of CaSiO3-perovskite is compared with the PREM model. The calcium content in the perovskite composition will increase the density of mineral and it good agree with the density according to the PREM model at the lower mantle region. Full article
(This article belongs to the Special Issue Minerals and Solids at High Temperature and High Pressure: Equations of State and Thermodynamics)
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