SUBJECT
Hydrothermal systems: mineralogy and geochemistry
lecture
master
2
Semester 2
Spring semester
General characteristics of hydrothermal systems in the Earth's crust: fluid, igneous, sedimentary, metamorphic, meteoric and seawater-derived fluids composition of hydrothermal fluid flow is the source of heat, the fluid status indicators. The hydrothermal mineral formation Thermodynamics: application of the Gibbs phase rule concentration conditions significance, mineral-forming-operation processes, the equilibrium constant of the free energy and enthalpy, modeling of mineral formation processes based on thermodynamic data, examination of mineral paragenesis reconstruction of physical-chemical parameters of the mineral formation basis. Hydrothermal minerals solubility, precipitation, precipitation mechanism: SiO2 minerals, carbonates and sulphates of Pb, Zn, Hg, and Cu sulfides, Au and Ag minerals. Hydrothermal processes, advanced testing methods for the reconstruction of the mineral paragenesis: precipitation sequence determination of element distribution in the equilibrium between mineral phases, fluid inclusion analyses, stable isotopes, overview of radiometric age determination. The characteristics of recent geothermal fields, volcanic-hidrothermal systems: the types of geothermal fields, fluid-rock interactions, the distribution of elements. Volcanic, magmatic and hydrothermal mineralization in Hungary.
Richards, J.P., Larson, P.B. (eds..) (1998): Techniques in hydrothermal ore deposit geology. Reviews in Economic Geology v. 10.