Abstract: İnler Yaylası Pb-zn deposits are situated in an area 20 km NW of Şebinkarahisar (Giresun). The deposits are confined to a large fault zone in Upper Cretaceous volcanics. The mineralized veins strike NE-SW and E-W. Three main mineralized zones are present distinguished. These are Azak-Yarar mine, Aşçı mine and Karadeniz mine. The dominant minerals of the veins are sulphide minerals in the lower levels and these grade upwards in oxide, carbonate and sulphate minerals. The main mineral assemblage of the İnler Yaylası mineralizations are; sphalerite, galena, pyrite, chalcopyrite, fahlore group minerals, enargite, linneite, pyrhotite, alcocitite-covellite, klaprotite, tetradymite-telluro-bismuthinite, Bi-fahlore groups minerals, altaite, gold, magnetite and hematite. The gangue minerals are quartz, calcite, clay minerals, chlorite, hematite andbaryite.The mineralizations are accompanited with intense alteration zones. Associations of carbonates silica minerals and epidote+chlorite+silica minerals are repeated several times towards depths. This alternation is probably due to the compositional changes and represents hidrothermal alteration of mafic mineral rich dacitic and andesitic volcanics and mafic mineral-poor pyroclastics.