Gold - Polymetal mineralization of Kohe-zar area is
located alout 35 kilometers southwest of Torbat - Heydarieh
in Khorasan province. Mineralization was oeeured in quartz -
speeularite ± pyrite ± chacopyrite veins and vein lets. The main
ore minerals are specularite, chalcopyrite, pyrite, avinite (Bi -
bearing tetraedrite), acanthite, native bismuth (occurred
intergrowth with barite), native gold, electrum, coveline -
digenite and weathered minerals such as geothite,
hydrogeothite, eu-fe oxides, malachite. Ore minetalization of
Kohe - zar is related to low - sulfide, quartz - hematite type of
hydrothemal ore deposists.
On the basis of therrnobarogeochemical investigation on
quartz, medium temperature fluid with low potential
mineralization is responsible for mineralization in this area.