Density of NaAlSi2O6 Melt at High Pressure and Temperature Measured by In-Situ X-ray Microtomography

In this study, the volumetric compression of jadeite (NaAlSi2O6) melt at high pressures was determined by three-dimensional volume imaging using the synchrotron-based X-ray microtomography technique in a rotation-anvil device. Combined with the sample ma...

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Main Authors:	Man Xu, Zhicheng Jing, James A. Van Orman, Tony Yu, Yanbin Wang
Format:	Article
Language:	English
Published:	MDPI AG 2020-02-01
Series:	Minerals
Subjects:	density jadeite melt equation of state high pressure x-ray microtomography
Online Access:	https://www.mdpi.com/2075-163X/10/2/161

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spelling	doaj-57b5935dc511459cbd1ab070089d80162020-11-25T00:15:38ZengMDPI AGMinerals2075-163X2020-02-0110216110.3390/min10020161min10020161Density of NaAlSi<sub>2</sub>O<sub>6</sub> Melt at High Pressure and Temperature Measured by In-Situ X-ray MicrotomographyMan Xu0Zhicheng Jing1James A. Van Orman2Tony Yu3Yanbin Wang4Department of Earth, Environmental, and Planetary Sciences, Case Western Reserve University, Cleveland, OH 44106, USADepartment of Earth and Space Sciences, Southern University of Science and Technology, Shenzhen 518055, ChinaDepartment of Earth, Environmental, and Planetary Sciences, Case Western Reserve University, Cleveland, OH 44106, USACenter for Advanced Radiation Sources, The University of Chicago, Chicago, IL 60637, USACenter for Advanced Radiation Sources, The University of Chicago, Chicago, IL 60637, USAIn this study, the volumetric compression of jadeite (NaAlSi<sub>2</sub>O<sub>6</sub>) melt at high pressures was determined by three-dimensional volume imaging using the synchrotron-based X-ray microtomography technique in a rotation-anvil device. Combined with the sample mass, measured using a high-precision analytical balance prior to the high-pressure experiment, the density of jadeite melt was obtained at high pressures and high temperatures up to 4.8 GPa and 1955 K. The density data were fitted to a third-order Birch-Murnaghan equation of state, resulting in a best-fit isothermal bulk modulus <inline-formula> <math display="inline"> <semantics> <mrow> <msub> <mi>K</mi> <mrow> <mi>T</mi> <mn>0</mn> </mrow> </msub> </mrow> </semantics> </math> </inline-formula> of <inline-formula> <math display="inline"> <semantics> <mrow> <msubsup> <mrow> <mn>10.8</mn> </mrow> <mrow> <mo>−</mo> <mn>5.3</mn> </mrow> <mrow> <mo>+</mo> <mn>1.9</mn> </mrow> </msubsup> </mrow> </semantics> </math> </inline-formula> GPa and its pressure derivative <inline-formula> <math display="inline"> <semantics> <mrow> <msubsup> <mi>K</mi> <mrow> <mi>T</mi> <mn>0</mn> </mrow> <mo>′</mo> </msubsup> </mrow> </semantics> </math> </inline-formula> of <inline-formula> <math display="inline"> <semantics> <mrow> <msubsup> <mrow> <mn>3.4</mn> </mrow> <mrow> <mo>−</mo> <mn>0.4</mn> </mrow> <mrow> <mo>+</mo> <mn>6.6</mn> </mrow> </msubsup> </mrow> </semantics> </math> </inline-formula>. Comparison with data for silicate melts of various compositions from the literature shows that alkali-rich, polymerized melts are generally more compressible than alkali-poor, depolymerized ones. The high compressibility of jadeite melt at high pressures implies that polymerized sodium aluminosilicate melts, if generated by low-degree partial melting of mantle peridotite at ~250−400 km depth in the deep upper mantle, are likely denser than surrounding mantle materials, and thus gravitationally stable.https://www.mdpi.com/2075-163X/10/2/161densityjadeite meltequation of statehigh pressurex-ray microtomography
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Man Xu Zhicheng Jing James A. Van Orman Tony Yu Yanbin Wang
spellingShingle	Man Xu Zhicheng Jing James A. Van Orman Tony Yu Yanbin Wang Density of NaAlSi<sub>2</sub>O<sub>6</sub> Melt at High Pressure and Temperature Measured by In-Situ X-ray Microtomography Minerals density jadeite melt equation of state high pressure x-ray microtomography
author_facet	Man Xu Zhicheng Jing James A. Van Orman Tony Yu Yanbin Wang
author_sort	Man Xu
title	Density of NaAlSi<sub>2</sub>O<sub>6</sub> Melt at High Pressure and Temperature Measured by In-Situ X-ray Microtomography
title_short	Density of NaAlSi<sub>2</sub>O<sub>6</sub> Melt at High Pressure and Temperature Measured by In-Situ X-ray Microtomography
title_full	Density of NaAlSi<sub>2</sub>O<sub>6</sub> Melt at High Pressure and Temperature Measured by In-Situ X-ray Microtomography
title_fullStr	Density of NaAlSi<sub>2</sub>O<sub>6</sub> Melt at High Pressure and Temperature Measured by In-Situ X-ray Microtomography
title_full_unstemmed	Density of NaAlSi<sub>2</sub>O<sub>6</sub> Melt at High Pressure and Temperature Measured by In-Situ X-ray Microtomography
title_sort	density of naalsi<sub>2</sub>o<sub>6</sub> melt at high pressure and temperature measured by in-situ x-ray microtomography
publisher	MDPI AG
series	Minerals
issn	2075-163X
publishDate	2020-02-01
description	In this study, the volumetric compression of jadeite (NaAlSi<sub>2</sub>O<sub>6</sub>) melt at high pressures was determined by three-dimensional volume imaging using the synchrotron-based X-ray microtomography technique in a rotation-anvil device. Combined with the sample mass, measured using a high-precision analytical balance prior to the high-pressure experiment, the density of jadeite melt was obtained at high pressures and high temperatures up to 4.8 GPa and 1955 K. The density data were fitted to a third-order Birch-Murnaghan equation of state, resulting in a best-fit isothermal bulk modulus <inline-formula> <math display="inline"> <semantics> <mrow> <msub> <mi>K</mi> <mrow> <mi>T</mi> <mn>0</mn> </mrow> </msub> </mrow> </semantics> </math> </inline-formula> of <inline-formula> <math display="inline"> <semantics> <mrow> <msubsup> <mrow> <mn>10.8</mn> </mrow> <mrow> <mo>−</mo> <mn>5.3</mn> </mrow> <mrow> <mo>+</mo> <mn>1.9</mn> </mrow> </msubsup> </mrow> </semantics> </math> </inline-formula> GPa and its pressure derivative <inline-formula> <math display="inline"> <semantics> <mrow> <msubsup> <mi>K</mi> <mrow> <mi>T</mi> <mn>0</mn> </mrow> <mo>′</mo> </msubsup> </mrow> </semantics> </math> </inline-formula> of <inline-formula> <math display="inline"> <semantics> <mrow> <msubsup> <mrow> <mn>3.4</mn> </mrow> <mrow> <mo>−</mo> <mn>0.4</mn> </mrow> <mrow> <mo>+</mo> <mn>6.6</mn> </mrow> </msubsup> </mrow> </semantics> </math> </inline-formula>. Comparison with data for silicate melts of various compositions from the literature shows that alkali-rich, polymerized melts are generally more compressible than alkali-poor, depolymerized ones. The high compressibility of jadeite melt at high pressures implies that polymerized sodium aluminosilicate melts, if generated by low-degree partial melting of mantle peridotite at ~250−400 km depth in the deep upper mantle, are likely denser than surrounding mantle materials, and thus gravitationally stable.
topic	density jadeite melt equation of state high pressure x-ray microtomography
url	https://www.mdpi.com/2075-163X/10/2/161
work_keys_str_mv	AT manxu densityofnaalsisub2subosub6submeltathighpressureandtemperaturemeasuredbyinsituxraymicrotomography AT zhichengjing densityofnaalsisub2subosub6submeltathighpressureandtemperaturemeasuredbyinsituxraymicrotomography AT jamesavanorman densityofnaalsisub2subosub6submeltathighpressureandtemperaturemeasuredbyinsituxraymicrotomography AT tonyyu densityofnaalsisub2subosub6submeltathighpressureandtemperaturemeasuredbyinsituxraymicrotomography AT yanbinwang densityofnaalsisub2subosub6submeltathighpressureandtemperaturemeasuredbyinsituxraymicrotomography
_version_	1725385708839895040

Density of NaAlSi<sub>2</sub>O<sub>6</sub> Melt at High Pressure and Temperature Measured by In-Situ X-ray Microtomography

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