The formation of the Elatsite deposit is related to the emplacement of several Upper Cretaceous porphyritic intrusions with the most significant intrusions of quartz-monzodiorite and granodiorite porphyries. The surface exposure of the Elatsite deposit provides an opportunity for investigating the lithogeochemical features of different hydrothermal alteration types. Petrographic observation combined with detailed geochemical analysis of the hydrothermal alteration types and chemical features of secondary biotite, amphibole, plagioclase and chlorite, led to the assessment of gains and losses of major, trace and REE elements and the origin of fluids for the variety of alterations. The Na–Ca alteration is probably formed from a mixture of magmatic and external fluids. The Na–Ca–K-silicate alteration is formed during fluid–fluid interaction of magmatic and external fluid, with predominance of the magmatic one, and occurs in the zone of primary neutralization. The K-silicate alteration is formed by magmatic fluids with a high oxygen fugacity, high temperature, high a_K+ and a_Mg2+. The upward superimposition of the K-silicate–sericitic alteration is related to the incorporation of meteoric fluids into magmatic fluids in an initial high oxygen fugacity environment and a high a_Mg2+. The quartz–sericitic alteration occurs from admixture of meteoric fluid into evolving magmatic fluids, with the predominance of the meteoric fluid, inducing an environment with a low a_K+/a_H+ ratio. The quartz–adularia–carbonate alteration is probably resulting of the admixture of a magmatic fluid with external and meteoric fluids, in an environment with high a_K+. The propylitic alteration is observed only in the periphery zones of the deposit and clear relations with other alteration types were not observed.