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Thermal equation of state of ice-VII revisited by single-crystal X-ray diffraction

Journal Article · · American Mineralogist
DOI:https://doi.org/10.2138/am-2022-8554· OSTI ID:2423707
Abstract

Ice-VII is a high-pressure polymorph of H2O ice and an important mineral widely present in many planetary environments, such as in the interiors of large icy planetary bodies, within some cold subducted slabs, and in diamonds of deep origin as mineral inclusions. However, its stability at high pressures and high temperatures and thermoelastic properties are still under debate. In this study, we synthesized ice-VII single crystals in externally heated diamond-anvil cells and conducted single-crystal X-ray diffraction experiments up to 78 GPa and 1000 K to revisit the high-pressure and high-temperature phase stability and thermoelastic properties of ice-VII. No obvious unit-cell volume discontinuity or strain anomaly of the high-pressure ice was observed up to the highest achieved pressures and temperatures. The volume-pressure-temperature data were fitted to a high-temperature Birch-Murnaghan equation of state formalism, yielding bulk modulus KT0 = 21.0(4) GPa, its first pressure derivative KT0′ = 4.45(6), dK/dT = –0.009(4) GPa/K, and thermal expansion relation αT = 15(5) × 10–5 + 15(8) × 10–8 × (T – 300) K–1. The determined phase stability and thermoelastic properties of ice-VII can be used to model the inner structure of icy cosmic bodies. Combined with the thermoelastic properties of diamonds, we can reconstruct the isomeke P-T paths of ice-VII inclusions in diamond from depth, offering clues on the water-rich regions in Earth’s deep mantle and the formation environments of those diamonds.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-06CH11357
OSTI ID:
2423707
Journal Information:
American Mineralogist, Journal Name: American Mineralogist Journal Issue: 8 Vol. 108; ISSN 0003-004X
Publisher:
Mineralogical Society of America
Country of Publication:
United States
Language:
English

References (52)

Possible presence of high-pressure ice in cold subducting slabs journal December 2000
Diamond thermoelastic properties and implications for determining the pressure of formation of diamond-inclusion systems journal January 2015
Preliminary Investigation of the Phase Boundaries between Ice VI and VII and Ice VI and VIII journal December 1966
In situ high-pressure x-ray diffraction study of H2O ice VII journal February 2008
EosFit7-GUI : a new graphical user interface for equation of state calculations, analyses and teaching journal June 2016
Constraining the equation of state of fluid H2O to 80 GPa using the melting curve, bulk modulus, and thermal expansivity of Ice VII journal July 2004
Titan's internal structure inferred from a coupled thermal-orbital model journal June 2005
Core Sizes and Internal Structure of Earth's and Jupiter's Satellites journal June 2001
Structure and hydrogen ordering in ices VI, VII, and VIII by neutron powder diffraction journal October 1984
Chemical differentiation of the Galilean satellites of Jupiter: 4. Isochemical models for the compositions of Io, Europa, and Ganymede journal June 2006
Ice vii, the Densest form of ice journal December 1964
OLEX2 : a complete structure solution, refinement and analysis program journal January 2009
Compression of H 2 O ice to 126 GPa and implications for hydrogen-bond symmetrization: Synchrotron x-ray diffraction measurements and density-functional calculations journal June 2008
Thermoelastic properties of ice VII and its high-pressure polymorphs: Implications for dynamics of cold slab subduction in the lower mantle journal November 2010
Infrared absorption study of Fermi resonance and hydrogen-bond symmetrization of ice up to 141 GPa journal November 1999
Simultaneous high-pressure and high-temperature volume measurements of ice VII and its thermal equation of state journal October 2010
Implications of an improved water equation of state for water-rich planets journal March 2021
Pressure-induced dissociation of water molecules in ice VII journal July 2015
BX90: A new diamond anvil cell design for X-ray diffraction and optical measurements journal December 2012
Thermal expansivity, bulk modulus, and melting curve of H 2 O–ice VII to 20 GPa journal October 1993
Possibility of realizing superionic ice VII in external electric fields of planetary bodies journal May 2020
Internally-Consistent Thermodynamic Data for Minerals in the System Na2O-K2O-CaO-MgO-FeO-Fe2O3-Al2O3-SiO2-TiO2-H2O-CO2 journal April 1988
Mass‐Radius Relationships for Solid Exoplanets journal November 2007
Melting curve of H 2 O to 90 GPa measured in a laser-heated diamond cell journal March 2004
Neutron diffraction observations of interstitial protons in dense ice journal June 2013
The Phase Diagram of Water to 45,000 kg/cm 2 journal December 1937
Extended and accurate determination of the melting curves of argon, helium, ice ( H 2 O ) , and hydrogen ( H 2 ) journal March 2000
Development of a Software Suite on X-ray Diffraction Experiments journal January 2010
Infrared absorption study of the hydrogen-bond symmetrization in ice to 110 GPa journal December 1996
Calibration of the ruby pressure gauge to 800 kbar under quasi-hydrostatic conditions journal January 1986
High pressure single-crystal micro X-ray diffraction analysis with GSE_ADA/RSV software journal August 2013
Structure and properties of two superionic ice phases journal October 2021
Raman Spectroscopy of Dense H 2 O and the Transition to Symmetric Hydrogen Bonds journal September 1999
Equation of state of ice VII up to 106 GPa journal September 1997
Toward an internally consistent pressure scale journal May 2007
Coupled deep-mantle carbon-water cycle: Evidence from lower-mantle diamonds journal May 2021
Pressure-driven symmetry transitions in dense H2O ice journal March 2022
Single‐Crystal Elasticity of High‐Pressure Ice up to 98 GPa by Brillouin Scattering journal April 2021
Viscosity of high-pressure ice VI and evolution and dynamics of Ganymede journal July 1981
Mass-radius relationships in icy satellites after voyager journal October 1982
Modulated phases and proton centring in ice observed by X-ray diffraction up to 170?GPa journal February 1999
Melting Curve of Water Studied in Externally Heated Diamond-Anvil cell journal September 2003
Observation of nuclear quantum effects and hydrogen bond symmetrisation in high pressure ice journal July 2018
High pressure-temperature Raman measurements of H[sub 2]O melting to 22 GPa and 900 K journal January 2004
Ice-VII inclusions in diamonds: Evidence for aqueous fluid in Earth’s deep mantle journal March 2018
Equations of State journal January 2000
Equations of state of ice VI and ice VII at high pressure and high temperature journal September 2014
Implications from Galileo Observations on the Interior Structure and Chemistry of the Galilean Satellites journal May 2002
Static compression of H2O-ice to 128 GPa (1.28 Mbar) journal December 1987
EosFit-Pinc: A simple GUI for host-inclusion elastic thermobarometry journal September 2017
High-pressure phase stability and elasticity of ammonia hydrate journal September 2019
DIOPTAS : a program for reduction of two-dimensional X-ray diffraction data and data exploration journal May 2015

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