The Patterns of the Ore-Metasomatic Zoning of the Svoboda District, the Malmyzh Au-Cu Porphyry Deposit

摘要

The ore-metasomatic zoning of the Svoboda locality, which is one of the centers of mineralization on the Malmyzh Au-Cu porphyry deposit, is reported. The central part of the ore bodies is composed of quartz-sericite and biotite-feldspar metasomatic rocks that bear relatively rich Au-Cu mineralization. The flank zones of ore bodies are mostly composed of phyllisite and propylite. These zones are characterized by high concentrations of Pb, Mn, and Zn. A positive correlation was detected for two groups of elements: Mo-Cu-Au and Pb-Zn-Mn. Based on analysis of the vertical change in the contents of ore components and their relationships, the modern erosion level at the upper part of the ore body has been proposed.