Other
Scientific paper
Mar 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982gecoa..46..331p&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 46, Issue 3, pp.331-337
Other
1
Scientific paper
Several independant determinations of the difference in Gibbs free energy of formation (from the elements at 25°, 1 bar) between NaCl 0 and KCl 0 in aqueous solutions (molality > 0.5) are derived from equilibrium data between alkali feldspars, feldspathoids (nepheline-kalsilite), micas (muscoviteparagonite) and hydrothermal (Na, K)Cl-H 2 O solutions. These results along with other data from the literature are discussed. The relation: 0 f , KCl 0 - 0 / tf , NaCl 0 (J) = -16500(± 2500) - 18(± 4) T (K). is proposed from 400 to 800°C and 1 to 2 Kbar.
Pascal Marie-Lola
Roux Jacques
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