Formation of Nitrogen-Rich Hot Springs: Modeling Physicochemical Interactions in a Water—Granite System

摘要

The chemical evolution of solutions and secondary minerals was studied in the systems water-granite without volatiles and granite with average concentrations of volatiles under constant thermodynamic conditions corresponding to those observed in natural nitrogen-rich hot springs and at variable (rock/water) ratio. The results show that, at average concentrations of volatiles, the concentrations of anions in solution can approach those observed in natural nitrogen-rich thermal waters, although the TDS (total dissolved solids) is higher than that of natural analogues. Natural nitrogen-rich thermal waters are formed in rocks with volatile abundances higher than the average values.