Journal ArticleDOI
On the oxidation state and volatile behavior in multicomponent gas-melt equilibria
Roberto Moretti,Paolo Papale +1 more
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Moretti et al. as discussed by the authors investigated the equilibrium between a 4-component H2O-CO2-SO2-H2S gas phase and a 13-component silicate liquid made of 10 major oxides plus dissolved H 2O, CO2, and S, by means of calculations involving homogeneous reactions in the gas phase, and heterogeneous gas-liquid saturation modeling based on classical Gibbs thermodynamics and Toop-Samis polymeric approach.About:
This article is published in Chemical Geology.The article was published on 2004-12-15. It has received 105 citations till now. The article focuses on the topics: Mineral redox buffer & Fugacity.read more
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The compositional dependence of the saturation surface of H2O + CO2 fluids in silicate melts
TL;DR: Papale et al. as mentioned in this paper applied thermodynamic equilibrium between gaseous and liquid volatile components to model the volatile saturation surface in H 2 O−CO 2 -silicate melt systems.
Journal ArticleDOI
Forecasting Etna eruptions by real-time observation of volcanic gas composition
Alessandro Aiuppa,Roberto Moretti,Cinzia Federico,Gaetano Giudice,Sergio Gurrieri,Marco Liuzzo,Paolo Papale,Hiroshi Shinohara,Mariano Valenza +8 more
TL;DR: In this article, the results of two years of real-time observation of H2O, CO2, and SO2 in volcanic gases from Mount Etna volcano were unambiguously demonstrated that increasing CO2/SO2 ratios can allow detection of pre-eruptive degassing of rising magmas.
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The Sulfur Budget in Magmas: Evidence from Melt Inclusions, Submarine Glasses, and Volcanic Gas Emissions
Paul J. Wallace,Marie Edmonds +1 more
TL;DR: The major magmatic volatile components (H2O, CO2, S, Cl, and F) play an important role in the formation, evolution, and eruption of magma as mentioned in this paper.
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Redox evolution of a degassing magma rising to the surface.
Alain Burgisser,Bruno Scaillet +1 more
TL;DR: This paper used a coupled chemical-physical model of conduit flow to show that the redox state evolution of an ascending magma and thus of its coexisting gas phase is strongly dependent on both the composition and the amount of gas in the reservoir.
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New experimental data and semi-empirical parameterization of H2O–CO2 solubility in mafic melts
TL;DR: In this article, a semi-empirical H2O-CO2 solubility model for mafic melts, which employs simplified concepts of gas-melt thermodynamics coupled with a parameterization of both chemical composition and structure of the silicate melt, is presented.
References
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Book
The Properties of Gases and Liquids
TL;DR: In this article, the authors estimate physical properties of pure components and Mixtures and show that the properties of these components and mixtures are similar to those of ideal gases and liquids.
Journal ArticleDOI
Chemical mass transfer in magmatic processes
TL;DR: Ghiorso et al. as discussed by the authors used a mathematical programming approach to determine the stable heterogeneous (solids+liquid) equilibrium phase assemblage at a particular temperature and pressure in magmatic systems both closed and open to oxygen.
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Chemical mass transfer in magmatic processes: III. Crystal growth, chemical diffusion and thermal diffusion in multicomponent silicate melts
TL;DR: Lesher and Walker as discussed by the authors used the LMDE to model the growth of plagioclase in undercooled tholeiitic melts by approximating interface growth rates with a reduced growth rate function and with calculated solid-liquid solution properties obtained from the silicate liquid solution model of Ghiorso et al.
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Redox processes governing the chemistry of fumarolic gas discharges from White Island, New Zealand
TL;DR: In this article, a systematic thermodynamic evaluation of some 250 gas analyses for 100 to 800°C fumaroles on White Island, New Zealand, was carried out, and the gas discharges were found to be made up of two source components: (1) a primary "magmatic" component high in SO2, rising rapidly and directly from the underlying magma; and (2) a secondary "hydrothermal" component rising slowly from a two-phase, saline brine-vapor envelope surrounding the magmatic system.
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Viscosities of hydrous leucogranitic melts: A non-Arrhenian model
K. U. Hess,Donald B. Dingwell +1 more
TL;DR: In this paper, an equation is presented for the calculation of the shear viscosity of hydrous (0-12.5 wt% H2O) leucogranitic melts from 102 to 1013 Pa·s.