Geochemistry and petrography of Meiduk copper deposit's host volcanic rocks - Kerman

The study area is located in Central Iranian volcano-plutonic copper belt (Dehaj-Sarduiyeh belt) about 42 Km northeast of Shahrbabak in Kerman Province. Based on petrographic studies, extrusive rocks have the composition from trachyandesite, andesite basaltic and andesite to dacite with Eocene age. Mineralogically, the rocks contain plagioclase, amphibole, biotite and quartz. Chlorite, calcite, epidote and sericite are secondary phases. The texture of these rocks is normal porphyritic. Geochemically, the rocks mostly belonges to the calc-alkaline series. The ratio of Zr/Y>3 shows that these rocks are similar to active continental margin. Negative anomalies of Ti, Nb, P and positive anomalies Pb, K in spider diagrams are similar to subduction zone and crustal assimilation. These rocks shows enrichment from LILE and LREE elements and are relatively depleted from HFSE elements. These properties can be correlated with subduction volcanic arcs and active continental margins.