TY - JOUR ID - 139867 TI - Geology, structure and mineralization of Cu (± Au) hydrothermal-magmatic deposits of Saveh-Razan region JO - Scientific Quarterly Journal of Geosciences JA - GSJ LA - en SN - 1023-7429 AU - Heidari, Seyed Mehran AU - Safavy, Sara AU - Akbarpour, Afshin AU - Hassanlou, Azra AU - Mohaghegh, Bahram AD - Research Institute of Earth Sciences, Geological Survey of Iran, Tehran, Iran AD - Geological Survey of Iran, Tehran, Iran Y1 - 2022 PY - 2022 VL - 32 IS - 2 SP - 89 EP - 104 KW - Mineralization KW - Intermediate sulfidation KW - Epithermal KW - Saveh KW - Razan DO - 10.22071/gsj.2021.276571.1894 N2 - Saveh-Razan copper (± gold) area, with WNW direction in the northwest of Urmia-Dokhtar magmatic belt, with the highest reaction to right-sided shear zones and structural trend change during the Oligomyocene, leads to the placement of semi-deep Oligomyocene diorite massifs in shallow rock depths. It is an Eocene volcano. By creating different types of mass-related hydrothermal alteration (propylitic, intermediate-advanced argillaceous, and phyllite) along the fractures, the system concentrates the mineralizations in quartz-sulfide veins, hydrothermal incisions, and concentrated sulfide-bearing filaments. Common features of metallurgy in this area are fluid homogenization temperature between 250 to 350 ° C and salinity range of 6-28% by weight of salt, containing CO2 gas and liquid phase of liquid and the presence of sulfides such as pyrite, chalcopyrite, burnite, chalcocite and sulfosalts in related reserves. There is also more gold than silver. Therefore, these features are most similar to the mass-related intermediate-type epitermal deposits that form in calcoalkalkene magmatic arcs. UR - http://www.gsjournal.ir/article_139867.html L1 - http://www.gsjournal.ir/article_139867_c860c361c875aa705f74b80ab86580ae.pdf ER -