The consumption level of natural zeolites is very low both in Turkey and in the world alth ough there are numerous laboratory studies suggesting the applicability of natural zeolites in several industrial processes and agricultrural applications. In this study, a comprehensive compilation of work done by Turkish zeolites were done. These are classified as geological studies, zeolite characterization studies and applications oriented works together wtih their critical evaluation. There are large reserves of clinoptilolites in Bigadiç and Gördes and samples from these fields have been characterized by chemical and physical tests (chemical analysis, X-ray diffraction patterns, SEM photographs, TGA curves, pore size distributions, thermal stability, cation exchanges, etc.). In order to increase the consumption level and the market share of the natural zeolites, it is suggested that emphasis should be given to zeolite characterization studies, well-characterized samples need to be used in applications-oriented research, and market improvement studies need to be focused on application areas where the low material cost of natural zeolites would be exploited.