The partitioning of copper between silicate melts and two-phase aqueous fluids: an experimental investigation at 1 kbar, 800 degrees C and 0.5 kbar, 850 degrees C
Article Abstract:
A study conducted on the partitioning equilibria for copper (Cu) in magmatic-hydrothermal systems shows that Cu partitions into hydrosaline brine more than the low-salinity aqueous vapour. The brine/vapor equilibrium constants are almost unity. The Cu partition coefficient depends on the total pressure of the system and increases as the concentration of chloride increases. The melt composition does not affect Cu partitioning. An analysis of the results obtained at 1 kbar, 800 degrees C and 0.5 kbar, 850 degrees C is given.
Publication Name: Contributions to Mineralogy and Petrology
Subject: Earth sciences
ISSN: 0010-7999
Year: 1995
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Hydrogen-alkali exchange between silicate melts and two-phase aqueous mixtures: an experimental investigation
Article Abstract:
The exchange equilibria for hydrogen, potassium and sodium in magmatic-hydrothermal systems are studied. Experiments on the three-phase system, high-silica melt + low-salinity aqueous vapor + hydrosaline brine at 800 degrees Centigrade and 100 MPa and 850 degrees Centigrade and 50 MPa show that the hydrogen-sodium and hydrogen potassium exchange constants are inversely proportional to the total chloride concentration in the vapor + brine mixture.
Publication Name: Contributions to Mineralogy and Petrology
Subject: Earth sciences
ISSN: 0010-7999
Year: 1997
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Anatexis of interlayered amphibolite and pelite at 10 kbar: effect of diffusion of major components on phase relations and melt fraction
Article Abstract:
A study of anatexis of interlayered amphibolite and pelite at 10 kbar shows that diffusion of components alters the phase relations, melt fractions and restite compositions significantly. The transfer of sodium from the amphibolite to the pelite increases melt fraction in the pelite layers of the layered structures. The transfer of potassium and calcium also causes significant changes in the interlayers.
Publication Name: Contributions to Mineralogy and Petrology
Subject: Earth sciences
ISSN: 0010-7999
Year: 1995
User Contributions:
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