The Davaran deposit, which is situated in the SW of the Ardestan city in the Urumieh-Dokhtar Magmatic Belts, Central Iran, consists of Cu (-Ag) strata-bound orebodies occurring within an Eocene volcano sedimentary sequence. The volcanic rocks in the area are composed of basalt, basaltic andesite, andesite and lesser pyroclastics rocks (tuff, ignimbrite, and agglomerate). Chemical analyses of the volcanic rocks indicate calc-alkaline affinity and subduction-related magmatic arc, and the host rocks underwent hydrothermal alterations with silicification, carbonation, argillization and propylitization. Ore mineralizations occur as vein-veinlet, disseminated, replacement and, open space filling, and are comprised of chalcopyrite, bornite, chalcocite, digenite, covellite, malachite, azurite, chrysocolla, hematite and magnetite. Chalcocite is the most abundant copper sulfide mineral. Geochemical results show a significant copper anomaly (0.4 – 3.3 %) that is positively correlated with silver. The microthermometric data indicate that the primary copper mineralization occurs in the temperature range from 145 to 264 °C with average of 184 °C. Fluid salinities vary between 8.8 and 14.7 wt.% NaCl equiv. On the homogenization temperature vs. salinity diagram, the Davaran deposit shows involvement of both basinal and seawater fluids. Thus, based on all the characteristics of geology, mineralogy, alteration and fluid inclusion, it is concluded that the Davaran deposit can be classified as a Manto-type deposit.
