Geochemistry of fluorine in halo waters of ore fields of the southeastern part of the Dnipro-Donetsk avlakogen

The geochemical features of fluorine and its possible sources in the waters hydrothermal ore fields Dnipro-Donetsk avlakogen (DDA) are considered. It was established that formation anomalies occurs due to interaction infiltration zone free water exchange deep formation, which unloaded along zones faults. is substantiated migration determined by type groundwater, degree mineralization, acid-base (pH) oxidation-reduction (Eh) potentials, presence complex-forming elements with forms mobile complex compounds, etc. Formulation problem. Fluorine a typomorphic chemical element widely present groundwater. large-scale, contrasting hydrogeochemical various types fields, controlled faults - fluorite, mercury, polymetallic, others. Presenting main material. Anomalies also formed those fault zones, where processes modern heat mass transfer observed, manifested upward discharge endogenous fluids against background increased intensity geothermal field. This indicates probable arrival fluid flows, mixed during their migration. most aureoles scattering hypergenic weathering fluorite Pokrovo-Kyreevsky deposit aureole Mykytiv mercury field, rocks mineralization absent. In them, fluorine, together other trace elements, multicomponent part association elements-indicators hidden Hg, As, B, F, (Sb). Conclusions. 1. Geochemical caused both hypogenic factors concentration hydrolithosphere avlakogen. 2. high activity systems and, particular, numerous exist under different conditions form gas, simple anions, compounds metals, silicon, manganese, boron migrates best alkaline sodium bicarbonate chloride waters, Сl–, Na+ ОН– ions not only act as complexing agent, but provide ionic strength aqueous solutions. 3. content Pokrovo-Kyreivsky provided two processes: a) physicochemical destruction CaF2 gravitational exchange; b) influx into discharged structures at post-hydrothermal stage tectonic activation. 4. Abnormally concentrations Mykytivskyi Druzhkivsko-Kostiantynivskyi deposits, there practically no from flows underground horizons. 5. natural deposits region are: products fluorite; postheterothermal fluids; c) pore solutions sedimentary marine origin.