Mohamad Reza Hosseinzadeh; Seyed Ghafour Alavi; Mohsen Moayyed
Volume 5, Issue 17 , April 2014, , Pages 17-32
The Sungun porphyry copper mine is located in the north of Varzeghan, Eastern- Azarbaijan province. The oldest rocks in the study area are limestone with the Cretaceous in age. Following ...
The Sungun porphyry copper mine is located in the north of Varzeghan, Eastern- Azarbaijan province. The oldest rocks in the study area are limestone with the Cretaceous in age. Following the emplacement of intrusive porphyry body, four groups of dyke with various compositions have been intruded into the intrusive body. The intrusive is quartz-monzonitic in composition. There are four alteration zones including potassic, phyllic, propylitic and argillic in the Sungun porphyry body. The common texture in these rocks is porphyritic with cryptocrystalline matrix, and in dykes, microlitic and microlitic porphyry. The Sungun porphyry body evolved due to magmatic differentiation, fractional crystallization, assimilation and crustal contamination. The Sungun intrusive and associated dykes are meta-aluminous and belong to high-K calc-alkaline to shoshonitic magma series. In terms of tectonic setting, the Sungun body lies in syn- to post-collision volcanic arc. In the contact of the Sungun porphyry and the upper Cretceous limestones and marls, the Cu-Fe skarn developed in the north and the east. These skarns are divided into the endoskarn and exoskarn. Based on field geology and mineralogical studies, the exoskarn in Sungun is divided into pyroxene, garnet and epidote zones.