In the Lesser Caucasus the copper-porphyry ores fields formed doubly – in the Late Jurassic in the north-east part of region (Lok-Garabag structural-formational zone) and in Cenozoic during orogenesis (Miskhana-Zangezur and Geycha-Akeri zone). Copper-porphyry mineralization in the north-east part of Lesser Caucasus genetically (or parageneticly) connect with minor intrusions and thick dykes of quartzoes–dioritic porphyrites of the Lesser Jurassic and is accompanied by wallrock metasomatic alterations of secondary quartzites, propylites, argilizites rocks and etc. The hypergenesis zone products have widely developed in the field which are considered first and are characterized by specific geological position, by mineralogical and geochemical peculiarities. The hypergenesis zone has been revealed in relatively old fields of the copper-porphyric ores in the north-east part of the Lesser Caucasus and it was represented by subzones 1) oxidation, 2) leaching, 3) secondary sulphide enrichment, 4) complex ores, which are located in vertical section from top downward and distinguish with their mineral associations.