The neoidic sulphide mineralization located in tertiary sediments of Lom Bílina in Bílina's fault is of hydrothermal origin. The sulphidic mineralization is associated with fault systems of Eger rift and temperature of fluid crystallization was about 50řC. The mineralization of Bílina's fault is rather monotonous, the marcasite and pyrite is mostly found without a trace elements. In the crystals were also registered zones with the contents of trace elements, especially As and Ni. The contents of As enriched precipitation zones were fluctuating from 0,2 to 5,4 wt. %, Ni enriched zones were ranged from 1,6 to 5,9 wt. %. The precipitation zones with increased As and Ni content were very thin, there were very short time intervals of As and Ni enriched fluids precipitation. In the marcasite crystals were also found the porous zones of clay mineral microinclusions. These zones showed higher content of Al and Si. There is high abundance of Fe-disulfides at Bílina's fault-dispersed in coal bed, or bonded to tectonic zone of the Bílina's fault. Pyrite and marcasite are dispersed in the coal bed and genetially aren't related to sulphides bonded to Bílina's fault.

Thesis deals with issue of „brownfields“ in mining sphere and their regeneration. The work is splitted into two parts, theoretical and practical. The theoretical part contains basic economic terms, relative to theme of the thesis and basic information about brownfields and their dividing. The practical part contains valorization of social-economical utilization on the study case of brownfield mining area Most-Ležáky in north side of Czech republic. The aim of this thesis is to assess, if is the revitalization of this specific brownfield, and similar brownfields, social-economically effective. The assessment contains social-economic benefits and costs of specified area revitalization.