Akademik Veri Yönetim Sistemi
Geochemistry International, cilt.49, sa.1, ss.76-89, 2011 (SCI-Expanded)
Groundwater can be exposed to pollution and therefore the quality will be affected in areas of fluorite mineralization. Distribution of fluorite mineralization in the area, its formation type and hydrogeological characteristics of these rocks are a factor of the pollution parameters in groundwater. Syenite, nephelinesyenite and micro gabbro type alkaline rocks are exposed in the Kaman region. Hydrothermal fluorite mineralization is formed in fractures and fissures of the syenite and nepheline-syenites in the study area. The fluoride values of these rocks vary between 480-11990 ppm. These high fluoride concentrations in the rocks result in fluoride contamination in groundwater. Hydrochemical and isotopic analyses results indicate that groundwater has a shallow circulation and Ca2+-HCO3- hydrochemical facies in the region. Due to the lithologic effect the quality of the groundwater is worse during the dry season than the wet season. There is a positive correlation between uranium and fluoride and these ions are originated from fluorite mineralization and wall-rocks. It was determined that fluoride is the main natural pollutants in groundwater. Fluoride concentrations in groundwater for dry and wet periods are 0.17-4.86 and 0.23-3.55 ppm, respectively. It was observed that groundwater close to fluorite mineralization has higher fluoride concentrations in comparison to those of in distal areas. It has been determined that chloride is partially effective on salinity of the groundwater whereas the changes of the fluoride and flow yield are not effective. On the basis of World Health Organization and Turkish Standard Institute, generally fluoride, sulphate, and uranium concentrations in groundwater are above the recommended guideline values. © 2011 Pleiades Publishing, Ltd.