On the base of a detailed mineralogical and petrographic mapping with the use of X-ray guantitative phasic analysis of the metasomatic complex and ore deposits the as well as examination of composition of fluids a physical-chemical (thermodynamic) model for Baley gold ore region was created for the first time. The thermodynamic parameters (T, P, pH, Eh et al.), chemical composition of minerals (montmorilonites, illites, chlorites et al.), composition of fluid could determine the depth of metasomatic comples and gold ores. The physical-chemical model allow to prognosticate and hiccup ore deposits at depth.