The Nature of Fluid Inclusions in Calk-alkaline Rocks in Tanurjeh Cu - Au Mineralized Area (north of Kashmar)

The study area is located in Khorasan Razavi province, north of kashmar city. The structural location of the study area along the Khaf-Doruneh Belt and near the Doruneh Fault and close to the various Tertiary magmatism caused special mineralizations throughout the studied area. The presence of petrology (calk-alkaline sub volcanic bodies), various alteration zones, presence of gold anomalies, pyrite and secondary iron oxides, in this area indicate some similarities to continental margin zones and Eocene porphyry-forming volcanics. Fluid inclusion studies (homogenization temperature between 200 to more than 400 °C with salinity between 5 to 40 %wt NaCl, 840 m depth with 200-300 bar pressure) shows some similarities to Cu porphyry and Au epithermal systems.