Geochemical Exploration of the Tareek Darreh Gold Deposit, North of Torbat-e Jaam, East Iran

The tareek darreh gold deposit is located 40km north of torbat-e jaam in the khorassan-razavi province, ne-iran. the studyarea mainly comprises slightly metamorphosed, sedimentary rocks of jurassic age including alternation of shale, siltstone, andsandstone. these rocks have been intruded by plutonic rocks such as gabbro-norite, diorite, quartz-diorite, and rhyodacite. the orebodes are exposed by trenching and pitting .in this study, all trenches and pits were systematically sampled and analysed by xrf,xrd, and icp methods as well as petrological mineralogical studies. the alteration minerals of quartz, chlorite, albite, and sericiteare mostly observed on the top or margin of the stocks. alteration is more intensive at the contacts of the stocks where vein typemineralization has occurred. the veins are mainly composed of silica type and calcite type, arsenopyrite, chalcopyrite, and pyritemain ore minerals. four promising mineralization zones were selected for further studies. the analytical results for the zones no. 2and no. 4 confirm high gold, copper, bismuth, tellurium, and silver. in zone no. 2 (50 x 80 m2) an average of 3.5ppm gold wasrecorded for one of the trenches, while in zone no. 4 (50 x 250m2) the average gold content is 1.35ppm. according to our studies,the tareek darreh gold deposit is considered to be similar to the intrusion-related gold systems.