Türkiye Jeoloji Bülteni

Mineralogical and Geochemical Characteristics of The Kan Yayla (Maçka Trabzon) Aubearing Zn-Pb Deposit

Abstract: Kan Yayla area contains rocks ranging in age from Jurassic to Tertiary. Upper Cretaceous aged ore-bearing dacite is the host tovarious mineral occurences, overlies Pontid Lower Basic Complex composed of spilitic basalt, andesite lavas and their pyroclasticvarieties of Jurassic. The ore-bearing dacite is overlain by the barren Dikkaya Dacite of Upper Cretaceous. All the lithologies areintruded by the Zigana Granitoid of Tertiary. The fracture systems caused by the Valles Type caldera formation in the area, is the main control for the mineralization. The Kan Yayla Zn-Pb deposit contains subparallelveins and has significant concentrations of gold.Fluid inclusion studies indicate low-temperature hyrothermal conditions for mineral deposition. Syngenetic paragenesis are given as:Sphalarite, galena, py rite, chalcopyrite,fahlore,fraybergite, native gold and electrum. Geochemical studies show that gold correlateswith antimony and arsenic, silver with lead, and cadmium with zinc.