CU (AU) MINERALIZATION IN THE KUHE-ZAR AREA, NE OF IRAN

摘要

The Cu (Au) porphyry mineralization of Kuhe-Zar is located 41 km west of Torbate-Heydaruh, in the west Khorasan province NE Iran. Mineralogical observation of the upper levels of the Kuhe-Zar deposit revealed the following pre-ore hydrothermal alteration within the intrusive, volcanic and volcanoclastic formation of younger age: propylitic (chloritization), silicification and argilization. Mineralization occurs in quartz-specularite-pyrite-chalcopyirite veins and veiniets. Several mineral assemblages representative of low-sulphidation style and quartz-hematite type were established in the upper levels of Kuhe-Zar deposit. These include specularite (Cu-V-Mo assemblage), pyrite, chalcopyrite, (Ag-PGE assemblage), annivite (Se-Zn-Cd assemblage) tetrahedrite (tennantite) (Bi-Se-Zn-Cd-Sb assemblage), acanthite (Fe-Cu-Te-As assemblage), native gold, electrum, covellite (Cu-Fe-As assemblage), digenite and supergene minerals such as goetHite, hydrogoethite, Cu-Fe oxides ad malachite.