This study was conducted to investigate the applicability of the solution mining technique to the Turkish trona deposit. For this purpose, sesquicarbonate and alkali extraction processes were applied to Turkish trona. Laboratory experiments were conducted to investigate the dissolution system and the crystallization parameters of these processes. The trona mineral used for this study was Turkish trona which had small amounts of sodium chloride and sodium sulphate compared with the Wyoming (USA) trona. Two crystallization methods were used to produce the crystals: cooling crystallization and evaporative crystallization. The crystals were calcined to produce soda ash.