Abstarct: The Tazareh Coal Mine is located 45 km northeast of Damghan City. The objective of this study was to investigate the mineralogical and geochemical characteristics of spoils produced in Tazareh coal mine, and to evaluate the potential of the waste materials to produce acid mine drainage. For this purpose, 8 representative waste samples were collected. To achieve the purposes of the study, polish sections were prepared and studied. Indeed, X-ray diffraction (XRD) analysis, X-ray fluorescence analysis (XRF) and static experiments performed on the samples. Mineralogical studies indicate the presence of pyrite, chalcopyrite, arsenopyrite, chalcosite, marcassite, albite, kaolinite and quartz in the studied samples. Pyrite minerals are present as angular, spherical, and framboidic aggregates, or as filling the fissure. The studied samples are not enriched with respect to Mn, Fe and Cd elements, whereas they are significantly enriched with Ni, Cr, Cu and are highly enriched with As. The highest concentration of elements was observed in sample no. 6. According to the results of static tests, the pH of saturated mud was more than 4 and the electrical conductivity of saturated mud of 6 samples was more than 2000 µS/cm. According to static test results, only samples no. 6 and 2 have acid production potential. Field observations confirm this conclusion. The obtained results in this study show the necessity of environmental management in the Tazareh mine district.