Processing of exploration data in Zarshouran area, modeling of ore body and mineral resource estimation

Zarshouran zone is located in South East of west Azerbayjan. From geological point of view this zone is a part of Alborz-Azerbaijan zone and Precambrian hostrock forms the prevailing outcrop of Zarshouran zone which is composed of carbonates and acidic volcanic rocks to intermediate rocks. This sequence covered by sharp unconformity from red layers of Oligomiocene. The most important structure which effects in forming the ore deposit, is Imankhan anticline and the main structural features in Zarshouran ore deposit is ductile and brittle structures and among these the main faults with the direction of North-West and South East are probably in connected with mineralization. Gold mineralization in this ore-deposit from different point of view is similar to epithermal mineralization in sedimentary rock especially in calcareous rocks (Carlin type gold deposit). Silicic, silicic argillic, sercitic-argillic and alunitic alteration are visible in the zone. The datas of different stages of this zone have been gathered in GIS base and processed with Data mine Studio 3 software. At first 1427 geochemical samples were studied and the highest mineralization potential of the zone was specified and gold paragenesises were distinguished. Then based on drilled boreholes and statistical studies of datas sections and estimation space were specified and using the best method of estimation, ordinary kriging, and reservoir evaluation have been done. Finally, based on different parts of mineral ore thicknesses and estimation error, the best drilling points for complementary survey of zone in the nets of 50,100,200 meters were specified.