1- Khorramabad Branch, Islamic Azad University
Abstract: (176 Views)
Aminabad barite deposit is located 30 km east of BoeinMiandasht and in the middle part of the Sanandaj-Sirjan magmatic-metamorphic zone. The available rock units include green trachy-andesites, calcareous sandstone, limestone to dolomitic-limestone, conglomerate, sandy-limestone belonging to the Jurassic-Cretaceous and Holocene alluviums. This field consists of two parts: Stringer and Stratiform. The Stringer zone consists of trachy-andesites that is cut by sulfide-bearing barite-quartz veins. The Stratiform mass is placed in the form of a lenticular mass on the stringer part and consists of mass barite with small amounts of sulfide ore. The low salinity of fluids can indicate the origin of sea water, which together with the average homogenization temperature indicates the rotation and upward movement of fluids due to heating by a hydrothermal source and at the cold end and the deposition of sulfide and sulfate due to mixing with sea water Kuroko-type sulfide deposits are similar.
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