Origin of spring water

Inverse modeling is to be carried out for the spring water in the eastern part of the model area (Fig. 40) to determine the geological formation from which the spring water originates. The hydrogeochemical data can be found in Table 34. 

Mineralogical investigations showed that the following trace minerals exist additionally to the main minerals in the following geological formations  

Proceed with the assumption that neither feldspars nor mica nor halite nor gypsum will form under the given conditions. However, clay minerals such as Ca montmorillonite can precipitate. 

Give reasons for your chosen model regarding the special geological location of the spring and try to use a minimum of mineral phases. 

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