Abstract            Volume:8  Issue-8  Year-2020         Original Research Articles

Online ISSN : 2347 - 3215 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcret@gmail.com

This study aims to estimate the temperatures reached in thermal springs reservoirs in the region of Agadez through the application of the most commonly used geothermal equations (Silica, Na/K, Na-K-Ca, Na-K-Mg) and to compare these values with those calculated from the saturation indices. The equations of these geothermometers were processed with the Excel software. The Aquachem software allowed us to know the state of equilibrium between the rocks and the thermal water and to draw the Giggembach diagram for the estimation of the reservoir temperatures of the different springs. The saturation indices (SI) show that the waters in the study area are under-saturated with respect to Halite (NaCl), Gypsum (CaSO₄, 2H₂O), Fluorite and Anhydrite (CaSO₄). The temperature results show that the silica geothermometers (temperature between 42-100°C), the Giggembach ternary diagram (temperature between 40-100°C) and the saturation index (temperature between 60-90°C) give the same 40-100°C estimation intervals. The Agadez thermal springs can be classified among the medium energy geothermal sources, thus the possibility of recovering these sources though the production of electricity, the drying of agricultural products or metal recovery.

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