Abstarct: The Robaei Copper deposit is located in 95 km south of Damghan in Semnan province, 5 km southeast of Dian village and Robaei Iron (copper, gold) deposit is located about 1km southeast of Robaei Copper deposit, northern part of central Iran structural zone and Torud- Chah Shirin volcano- sedimentary mountain range. Rock units exposed in the area include schists and mextamorphosed limestone and dolomite(Ordovician- Silurian), late Cretaceous limestones, volcanic lava and pyroclastic Eocene rocks and Quaternary sediments. Late Cretaceous limestone in the area affected by subvolcanic yonger dacite and caused iron mineralization. Eocene volcanic rocks mostly include basalt, basaltic andesite, andesite, trachy-andesite, dacite and pyroclastic rocks such as sandy tuff, breccia tuff, crystal lithic tuff, lithic tuff and agglomerate. baxsed on geochemical data, the volcanic rocks in the area have calc-alkaline nature in terms of chemical composition and in terms of tectonomagmatic is related to subduction zone. The major alteration includes argillite, chlorite, carbonate, silica and hematite. Field observations and mineralography studies reveal that the mineralization in the Robaei area often occurred as vein- veinlet, filling free space between the grain tuffs and also as vein- veinlet and open space filling occurred in the host rocks of andesite and basaltic andesite with intermediate composition. Effective factors controlling mineralization in the area include tectonic regional and local structures, host rocks, hydrothermal solutions, intrusive body or subvolcanic and etc. The minerals forming Robaei copper deposit occurred in three stages including hypogenesis (chalcopyrite, Pyrite, bornite and chalcocite), reduced supergenes (chalcocite, digenite and Covellite) and supergenes oxide (malachite and azurite and chrysocolla and oxide and hydroxide iron). Gangue and minor minerals formed in Robaei copper deposit are pyrite, magnetite, hematite, goethite, limonite, calcite, dolomite, quartz, barite and clay minerals. The most important textures of mineral are disseminated, exolution, vein- veinlet, open space filling, coloforme and cataclastic. Iron mineralization occurred as vein in sandy tuff host rocks. The minerals forming Robaei iron(copper, gold) deposit divided into two groups: a- iron-bearing minerals include hematite, specularite, magnetite, pyrite, goethite and limonite b- copper-bearing minerals such as chalcopyrite, chalcocite, covellite and malachite. The results of fluid inclusion studies, frequency homogeneous temperature and salinity fluid in the Robaei iron(copper and gold) deposit is respectively 150- 249°C and 2-4w% NaCl and 140- 170°C and 2- 6 w% NaCl in Robaei copper(gold) deposit. According to the results of this research Robaei copper(gold) deposit has more similarities with intermediate sulfidation epithermal deposits. Robaei iron, copper and gold deposit have the most similarity with calcium low temperature skarn and IOCG deposits.