Hydrochemical study of hot springs in Western Mongolia

In Western Mongolia mineral waters have been studied quite well whereas there are no data on the interconnection of the geological structure of rocks with the chemical composition of hot springs that might be explained by the complexity of their interpretation. The research was carried out in two regions of Western Mongolia (Altai and Khangai). Hot springs were divided into 6 groups according to the temperature, depending on geological conditions. Forty water samples were taken from the selected points of nine hot springs. Water temperature in hot springs was from 23 to 55оС, at that Khangai hot spring water temperature was higher than in the Altai region. The hot springs of Khangai were classified44as Na-SO 2- type and the concentrations of SiO2, F- and B were within 71.9-132 mg/l, 2.30-13.0 mg/l and 0.070-0.240 mg/l, respectively. The hot springs in the Altai region were classified as Na, Ca-HCO3- and Na-HCO3- type and the concentrations of SiO2, F- and B were within 38.6-74.1 mg/l, 1.10-4.10 mg/l and 0.010-1.46 mg/l, respectively.