The Golcheshmeh copper deposit is located NE of Iran (south of Neyshabour) at the margin of Sabzevar Structural Zone. Based on geological and labratory studies, the outcroped rocks consist of Eocene volcanic rocks such as andesite, basaltic- andesite and basalt that associated with the sedimentary and volcanosedimentry rocks including limestone, tuff and breccia. The alteration is hosted andesitic layers that includes carbonatization, propylitic and less argilic and sericitic. The carbonatization zone is the most important alteration in this area. Mineralization mainly occurs in relative Eocene age volcanic rocks as vein- veinlets, amygdaloidal fillings and some replacement and disseminated styles. According to the minerallography studies, the main ores containing copper are divided into types oxide and sulfide. Mineralization mainly consists of oxide phases and can be seen as contamination of surface fractures and pores or voids filler in host rocks. The main oxide minerals are malachite, azurite and chrysocolla and sulfide minerals are chalcocite, covellite, with some minor pyrite, chalcopyrite, bornite, digenit and also native copper. Chalcocite is the most abundant ore sulfide in this area. Chalcocite is the main sulfide ore in this region. In most cases, the observed intergrowth between copper ores suggests the multi-stage mineralization in this region. Geochemical studies based on minor and trace elements obtained from this research indicate that the igneous rocks in this region are of the calc-alkaline basalt characteristics and, in terms of tectonic setting, could be attributed to subduction zone-related continental arc magmatism. Moreover, based on the performed geochemical analyses, the copper grade in the region varies from 13668 to 164000 g/ton, with iron anomalies seen therein. Based on identified characteristics this deposit is comparable to Manto and Keweenaw ( Michigan) mineral types deposit.

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