Geology, mineralization and geochemistry of TaknarPolymetal (Cu-Zn-Au-Ag-Pb) deposit (Tak I), Khorasan- Bardaskan

   Abstract:
      Geology in the area of Tak I mine are: Taknar formation, Paleozoic and younger intrusive rocks. Taknar formation is consists of sericite schist, chlorite schist, chlorite-sericite schist and some meta-diabase- gabbro-diorite. Three style of mineralization are: stock work, layered and massive. Due to strong tectonic activity in the area dimension and geometry of deposit are being changed. Paragenetic minerals within the massive and layered are: magnetite, pyrite, chalcopyrite, sphalerite, and galena. Magnetite is the main mineral in the massive area. Paragenesis within stockwork is: pyrite, chalcopyrite and magnetite. Chlorite, sericite, quartz, and carbonate are also present in different amount. The ore bearing fluid in the stockwork zone was in the field of pyrite and by approaching to layering it changed to the boundary of pyrite-magnetite. Within the layered section, the fluid at first was in the filed of magnetite and changed toward the boundary of magnetite-pyrite. In the massive zone, the fluid was mainly in the field of magnetite. Based on the geochemical data, the stockwork has potential for Cu-Au and the other sections are important for Cu-Zn-Au-Ag-Bi.