Abstract: The lead-zinc occurrence in Ağızlar village of Gölköy township of Ordu province is a group of veins thatcut through altered biotite andesite. Five rock units whoseages ranging from Upper Cretaceous to Tertiary were differentiated by geologic investigation of the area. These are, from oldest to youngest, pyroxene andesite, biotite andesite,limestone, andesite, ,and basaltic dikes. Characteristic structural elements of the area are normal faults. Important oreminerals in the Ağızlar lead-zinc occurrence are sphalerite ,and galena; gangue minerals are quartz ,and pyrite. Accordingto their mineral content, two types of veins are distinguished in the area: pyrite veins ,and pyritic lead-zinc veins. Threepyrite veins ,and seven pyritic lead-zinc veins are found in the area. Wall rocks surrounding the veins were altered invarying intensity in zones as wide as 400 m. Alteration zones are sericitization as the veinward zone, argillization as theouter zone, ,and locally, propylitization as the outermost zone.