Writers : Ghavi, J.; Karimpoor, M. H.; Ghaderi, M.; Rahimi, B.; Mazaheri, S. A.
Refference : 28th Symposium on Geosciences and the 14th Symposium on Geological Society of Iran
Publishing Year : 1389

Abstract :

Tarik Darreh Au-W prospect area is situated in northeastern Iran, in the boundary between Central Iran and Kopet Dagh structural zones. Torbat-e-Jam granitoid intrusion of Upper Triassic age is the major sign of magmatism in the area with an NW-SE trend which intrudes the Miankouhi Formation (Lower to Middle Triassic age) consisting of sandstone, siltstone and coaly shale turning those rocks into hernfels. Heavy mineral and stream sediment geochemical studies have shown anomalies of some minerals as well as elements such as Au, W, As, Co, Bi, Cu and Pb. Further field studies have resulted in identification of 8 mineralized zones in close relation with the plutonic rocks in the area. Surface sampling from the altered and mineralized zones as well as petrography, mineralography and geochemical analyses have shown interesting results indicating the existence of sulfide minerals such as pyrite, chalcopyrite, arsenopyrite and galena as well as high contents of Au (>8 ppm), As (>20%), and W (>1900 ppm) in at least 3 mineralized zones in north and center of the studied area. Geochemical findings and suitable intrusions with diorite to quartzdiorite composition confirm high potential of the Tarik Darreh area for gold mineralization. Association of gold with tungsten has also added to the exploration importance of the area.

Subject List : gold