Abstarct: Rabie Nia copper deposit is located in Semnan province, 140 km south of Shahroud, 20 km west of Trudeau and inside the Eocene volcanic-sedimentary belt of Trudeau-Chahshirin strip in the northern margin of the structural-sedimentary zone of Central Iran. Volcanic and magmatic activities in the belt from the Eocene to the Miocene have caused extensive hydrothermal alterations and mineralizations that are mainly related to subduction events in this zone. In the Trud-Chahshirin strip, the calc-alkaline and related mineralization volcanic activity is mostly associated with the left-handed Anjilo faults in the north and Trud in the south in a northeast-southeast direction. has happened. Studies on the host rock of the deposit indicate the presence of andesitic, basaltic and basaltic lavas along with pyroclastic rocks that were formed during the Middle Eocene-Oligomocene volcanic activity. These rocks are associated with a variety of algalite, sericite, siliceous, carbonate, chlorite, and iron oxide alterations around the veins and in parts of the area. In addition, they are calc-alkaline in nature, rich in potassium to chaos. Mineralization in Rabieinia region is formed as a vein along the fault plates in the lava complex that the fractures resulting from the operation of these faults in the rocks of the region, a suitable place for the penetration of solutions They have created a hot spring. These faults and fractures are the main controllers of mineralization. Endogenous zone ores (hypogene) are generally composed of chalcopyrite, chalcocite. Such as colitis, azurite, malachite, and chrysocolla are formed in their place.The mineral texture is also seen as scattered granules, streaks, substitutions, voids and cloforms. / Th Examination of geochemical data of volcanic rocks in the region shows significant enrichment of K, Th, U, and Pb elements and depletion of Nb and Ti elements. The origin of magma can be attributed to the mantle wedge related to the subduction zone.baxsed on geochemical studies, copper has a significant correlation with the elements Ag, As, Fe, Ar, Al, Pb, Ni, Zn, Sr These correlations are consistent with evidence of mineralogy (paragenesis and sequencing) is consistent. In general, according to the study of all lithological properties, structural control of mineralization, type of alteration and its expansion, simple mineralogy, geochemical studies, as well as their comparison with similar deposits, Rabieinia copper deposit can be In the category of copper ores, the Manto type was considered.