Secondary changes of nickel-bearing rocks of the dukuksky complex of Kamchatka

Abstract

The article presents the results of the research of the rocks оf the dukuksky complex in southern (Kvinum-Kuvalorog) group of the Kamchatka nickel-bearing province, which characterized by specific formation conditions. Their formation was significantly influenced by subduction component, which provided enhanced fluid saturation of initial melts, as well as compression conditions, due to which the segregation sulphide part loses contact with the surrounding parent rocks until the formation of independent bodies – intrusions (Shanuch) [1, 2]. In this regard, an important factor is the represents of existents post-magmatic transformations of rocks. Secondary changes in the mineral matter are emphasized indicate a significant contribution to the ore process of epigenetic changes, which is consistent with the ideas of higher hydration of the initial melts. The graphical intergrowths of carbonate and pyrrhotite, numerous single serpentine fibers within the ore mass, and a number of other signs suggest that most of the secondary changes took place before the final crystallization of the massifs in the late magmatic stage.