Propriétés thermodynamiques des solutions (Na,K)ClH2O entre 400 et 800°C, 1–2 Kb: une revue des équilibres d'échange avec les silicates sodipotassiques |
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Authors: | Marie-Lola Pascal Jacques Roux |
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Institution: | CRSCM 1A, rue de la Férollerie-45045 Orléans Cedex-France |
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Abstract: | Several independant determinations of the difference in Gibbs free energy of formation (from the elements at 25°, 1 bar) between NaCl0 and KCl0 in aqueous solutions (molality > 0.5) are derived from equilibrium data between alkali feldspars, feldspathoids (nepheline-kalsilite), micas (muscoviteparagonite) and hydrothermal (Na, K)Cl-H2O solutions. These results along with other data from the literature are discussed. The relation: . is proposed from 400 to 800°C and 1 to 2 Kbar. |
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