Argon solubility in SiO2 melt under high pressures: A new experimental result using laser-heated diamond anvil cell

Niwa, Ken; Miyakawa, Chie; Yagi, T.; Matsuda, Jun‐ichi

doi:10.1016/j.epsl.2012.12.014

Cited by 17 publications

(11 citation statements)

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“…A precise quantitative comparison with the solubility data available in the literature is difficult partly due to a lack of the high-pressure solubility data for Xe; except for some high-pressure data on tholeitic 2 and Haplogranitic 22 compositions, and partly due to the uncertainty of up to an order of magnitude in the available solubility limits. From the few reported high-pressure experiments and the numerical simulations of noble gas solubilities in silicates 2 – 4 , 6 , 9 , 23 , it is clear that saturation is attained after pressurization by about 5 GPa. By converting the solubility data available in the literature to atoms.cm −3 at 5 GPa and considering that Xe solubility is about one-third that of the Ar solubility, we estimate a solubility limit of about 10 21 atoms.cm −3 in SiO 2 (see section 4.4 in the SI) under equilibrium conditions.…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, achieving a true solubility saturation requires very high pressures and temperatures which are often restricted by the limits of available instrumentation and technical difficulties therewith (e.g. crucible melting; decomposition assisted by metal uptake by Pt-crucibles resulting in the formation of unwanted compounds; limits on highest attainable pressures and temperatures due to cell design 5 ; formation of crystalline phases 6 etc.). Due to the lack of availability of high pressure instruments, most of the solubility experiments are performed in a pressure range of <1 GPa.…”

Section: Introductionmentioning

confidence: 99%

“…True solubility saturation is rarely seen within this low-pressure range and it has been shown that solubility limits derived by fitting low-pressure solubility data (by assuming the validity of Henry’s law at high pressures) can be underestimated by up to an order of magnitude 2 , 3 , 8 due to the invalidity of ideal gas laws at high pressures. A limited number of high-pressure infusion experiments and numerical simulations have shown that the solubility saturation in various glasses requires pressures of about 5 GPa – or even higher for pure silica (see section 4.4 in the supplementary information (SI) for more details) 2 , 3 , 6 , 9 , 10 .…”

Section: Introductionmentioning

confidence: 99%

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Xenon solubility and formation of supercritical xenon precipitates in glasses under non-equilibrium conditions

Mir

Hinks

Delaye

et al. 2018

Sci Rep

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Estimates of noble gas solubility in glasses and minerals are important to understand the origin of these gases, particularly xenon, in the atmosphere. However, technical difficulties and ambiguities in quantifying the dissolved gases introduce large uncertainties in the solubility estimates. We present here the use of transmission electron microscopy (TEM) with in-situ noble gas ion implantation as a non-equilibrium approach for noble gas solubility estimates. Using a suitable Xe equation of state and Monte-Carlo simulations of TEM images, a clear distinction between Xe filled precipitates and empty voids is made. Furthermore, implantation-induced changes in the solubility are estimated using molecular dynamics simulations. These studies allow us to evaluate the xenon solubility of irradiated and pristine silica glasses and monitor in-situ the diffusion-mediated dynamics between the precipitates and voids — otherwise impossible to capture. On exceeding the solubility limit, supercritical xenon precipitates, stable at least up to 1155 K, are formed. The results highlight the high capacity of silicates to store xenon and, predict higher solubility of radiogenic xenon due to the accompanying radiation damage.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Xenon solubility and formation of supercritical xenon precipitates in glasses under non-equilibrium conditions

Mir

Hinks

Delaye

et al. 2018

Sci Rep

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“…in the Earth's mantle) the Ar and He solubility in CI-chondrite melt indicates that it would be possible for primordial and radiogenic Ar and He to be preferentially retained deep in the Earth. One can note here that the solubility of Ar in silicate melts at high pressure is an ongoing debate as the solubility drop of Ar in SiO 2 melt at about 5 GPa (Chamorro-Perez et al, 1996;Bouhifd et al, 2008) was not reproduced in a recent study by Niwa et al (2013), who instead show a slight decrease of Ar solubility in the range of 5-12 GPa. For basaltic melt, molecular dynamic simulations show also a slight decrease of Ar solubility in the range of 5 to 20 GPa (Guillot and Sator, 2012), but such calculations present large uncertainties.…”

Section: Helium In Early Magma Oceanmentioning

confidence: 65%

Silicate melts during Earth's core formation

et al. 2017

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International audienceAccretion from primordial material and its subsequent differentiation into a planet with core and mantle are fundamental problems in terrestrial and solar system. Many of the questions about the processes, although well developed as model scenarios over the last few decades, are still open and much debated. In the early Earth, during its formation and differentiation into rocky mantle and iron-rich core, it is likely that silicate melts played an important part in shaping the Earth's main reservoirs as we know them today.Here, we review several recent results in a deep magma ocean scenario that give tight constraints on the early evolution of our planet. These results include the behaviour of some siderophile elements (Ni and Fe), lithophile elements (Nb and Ta) and one volatile element (Helium) during Earth's core formation. We will also discuss the melting and crystallization of an early magma ocean, and the implications on the general feature of core-mantle separation and the depth of the magma ocean. The incorporation of Fe2 + and Fe3 + in bridgmanite during magma ocean crystallization is also discussed. All the examples presented here highlight the importance of the prevailing conditions during the earliest time of Earth's history in determining the composition and dynamic history of our planet

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“…Silicate melts may accommodate larger amounts of dissolved noble gases under increased P until solubility reaches a plateau circa 5 GPa with for instance a maximum of 3 mol% Ar in silicarich melts [46,47]. Note that solubility drops at higher P were reported [48,49] but these results were not reproduced [50], possibly due to incomplete melting of the samples at higher P in the first studies.…”

Section: Stuffed Amorphous Silicatesmentioning

confidence: 94%

Noble Gas Reactivity in Planetary Interiors

Sanloup

2020

Front. Phys.

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While the field of noble gas reactivity essentially belongs to chemistry, Earth and planetary sciences have brought a different perspective to the field. Indeed, planetary interiors are natural high pressure (P) and high temperature (T) laboratories, where conditions exist where bonding of the heaviest noble gases may be induced thermodynamically through volume reduction (Le Châtelier's principle). Earth and planetary sciences besides generate numerous and precise observations such as the depletion of the terrestrial and martian atmospheres in xenon, pointing to the potential for Xe to be sequestered at depth, potentially induced by its reactivity. More generally, this paper will review the advances on noble gas reactivity at the extreme P-T conditions found within planetary interiors from experiments and theoretical investigations. This review will cover the synthesis of cage compounds, stoichiometric oxides and metals, and non-stoichiometric compounds where noble gases are only minor or trace elements but could be essential in solving some Earth and planetary puzzles. An apparent trend in noble gas reactivity with P emerges. In the case of Xe which is the most documented, metals are synthesized above 150 GPa, i.e., at terrestrial core conditions, stoichiometric Xe-oxides between 50 and 100 GPa, i.e., in the P-T range of the Earth's lower mantle, but Xe-O high energy bonds may also form under the modest pressures of the Earth's crust (<1 GPa) in non-stoichiometric compounds. Most planetary relevant noble gas compounds found are with xenon, with only a few predicted helium compounds, the latter having no or very little charge transfer between helium and neighboring atoms.

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Argon solubility in SiO2 melt under high pressures: A new experimental result using laser-heated diamond anvil cell

Cited by 17 publications

References 58 publications

Xenon solubility and formation of supercritical xenon precipitates in glasses under non-equilibrium conditions

Xenon solubility and formation of supercritical xenon precipitates in glasses under non-equilibrium conditions

Silicate melts during Earth's core formation

Noble Gas Reactivity in Planetary Interiors

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