Physicochemical accents. The book shows the possibilities of applying of the physicochemical petrological research methods for an in-depth study of the processes of wallrock alterations and obtaining new original data in metasomatic petrology. The author's investigation on mineral equilibria in the system K2О-Al2O3-SiO2-H2O-SO3 is of particular importance for studying of the physicochemical conditions of mineral formation during the acid metasomatism of rocks. By investigating the mineral equilibria on this system, it is possible to develop a complete facies subdivision of secondary quartzes mineral family under different facies conditions. Physicochemical petrological investigations of the wallrock alterations in the Rodalquilad gold-alunite deposits (Southeast Spain) show the possibilities of obtaining important genetic data on an epithermal acid-sulfate type of gold deposit with a high degree of knowledge about it. New to metasomatic petrology are the data on the crystallochemical aspect (energy and structure) of metasomatic processes.
Milko Kanazarski graduated in Geochemistry and Chemistry from St Kliment Ohridski Sofia University. In 1964 he became a research associate in the Geological Institute at the Bulgarian Academy of Sciences (BAS), where he worked until retirement as Senior Prof. in 2006, gaining his PhD in 1982, DSc in 1996. Between 1978 and 1985 he was Deputy head of Central Laboratory of Experimental and Technical Mineralogy of BAS. He leads the course in Wallrock Alterations for MSc students at the St. Ivan Rilski University of Mining and Geology in Sofia. He had the exceptional opportunity to specialize with one of the most outstanding representatives of the physicochemical school of metasomatic petrology, Academian D. S. Korzhinskii at the Russian Academy of Sciences and to work with his research team. The scientific interests of Milko Kanazirski are in the metasomatic petrology with an emphasis on physicocmeistry of the processes of wallrock alterations - physicochemical analysis of mineral paragenses, experimental modeling of mineral equilibria and metasomatic zoning and numerical modeling of metasomatic processes.