Ion association in concentrated NaCl brines from ambient to supercritical conditions: results from classical molecular dynamics simulations |
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| Authors: | David M Sherman Matthew D Collings |
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| Institution: | (1) Department of Earth Sciences, University of Bristol, Bristol, BS8 1RJ, UK |
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| Abstract: | Highly concentrated NaCl brines are important geothermal fluids; chloride complexation of metals in such brines increases
the solubility of minerals and plays a fundamental role in the genesis of hydrothermal ore deposits. There is experimental
evidence that the molecular nature of the NaCl–water system changes over the pressure–temperature range of the Earth's crust.
A transition of concentrated NaCl–H2O brines to a "hydrous molten salt" at high P and T has been argued to stabilize an aqueous fluid phase in the deep crust. |
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