TY - JOUR T1 - Mineralogy, alteration, geochemistry, and fluid inclusion studies of the Balazard Cu-Au prospect, southwest of Nehbandan TT - کانی شناسی، دگرسانی، زمین شیمی و بررسی میانبارهای سیال منطقه اکتشافی مس - طلا بالازرد، جنوب غرب نهبندان JF - ijcmir JO - ijcmir VL - 29 IS - 1 UR - http://ijcm.ir/article-1-1593-en.html Y1 - 2021 SP - 179 EP - 196 KW - Mineralization KW - geochemistry KW - fluid inclusions KW - Balazard prospecting area KW - Lut block. N2 - The Balazard prospecting area is located about 120 km southwest of Nehbandan city, Khorasan Jonoobi Province, in the central parts of Lut block volcano-plutonic belt. The intrusion of a granitoid pluton into rhyolitic and andesitic rocks has led to alteration and mineralization. Hydrothermal alteration zones consist of argillic, sericite-argillic, silicic-argillic, propylitic, and advanced argillic. Sulfide and oxide mineralization occur as disseminated grains, veinlet, hydrothermal breccia and carbonate-silicic veins. The geochemical and radioisotope data are consistent with subduction related magmas that formed in an active continental margin, and these data suggesting a major interaction with upper crust during magma ascent. Microthermometric measurements of fluid inclusions yielded homogenization temperatures (Th) of 385–550 °C and moderate salinities of 7.1–21 wt% NaCl equivalent in Au bearing quartz vein, indicating the mixing of ore-forming fluids. Geology, mineralogy, alteration, fluid inclusions and geochemical studies all indicate that mineralization at Balazard area occur as both porphyry and high sulfidation epithermal systems. M3 10.52547/ijcm.29.1.179 ER -