Abstract: The mineralisations of Pertek-Demürek are; skarn type Fe and vein type Cu, The skarn type Femineralizations occur along the guartz diorite-Keban Marbles contacts and usually together with skarn formations, Thequartz diorite emplacement took place after the Yüksekova Complex`s thrust over to the Keban Metamoıphics cuttingboth of the formations. The skarn formations developed as exo and endoskarns. The ore mineral of these zones isdominantly magnetite. Pyrite is less abundant and chalcopyrite is scarce*The Cu mineralizations occur as net-like chacopyrite films within the silicified fracture zone fiilings. These fracturezones are 1 to 1.5 m thick and are found in the Yüksekova Complex. The hydrothermal solutions what given birth tothe Cu mineralizations should have originated from the quartz diorite or from surrounding rocks during the emplacementof the diorite. The primary mineral assemblage of the Cu mineralizations is as pyrite+ehalcopyrite. Limonite, bornite,idaite, metallic Cu and eovellite-chaleoeite are secondary minerals and are found in the oxidized parts.