Epithermal Cu-Pb-Zn mineralization in the Cidolog Area, Sukabumi Regency West Java Province, Indonesia

[摘要] There is epithermal system of Cu-Pb-Zn deposit in Cidolog area, Sukabumi, West Java Province, Indonesia. The alterations in the research area were carefully classified into three types of alteration zones, they are argillic alteration, propylitic alteration and silicic alteration. The mineralization then was carefully classified as pyrite(FeS2), chalcopyrite (CuFeS2), Galena (PbS), Sphalerite (Zn,Fe)S, Hematite (Fe2O3), Magnetite (Fe3O4), Chalcocite (Cu2S), Malachite (CuCO3(OH)2, Azurite (Cu3(CO3)2(OH)2. The analysis result of Cu, Pb and Zn elements in the area showed relatively higher than another elements ( Au, Ag ). In the research area, the mineralization process is controlled by geological structure such as faults and fractures. The appearances of the mineralization is abundant and can be found fulfilling the fracture zone mainly shear joints. This study will emphasize on the measurement and detailed analysis to know more about the Galena, Chalcopyrite and Sphalerite mineralization process and other minerals controlled by structures patterns. The controlling structure of this area generally are fractures and faults zone in NW-SE direction, the analysis of controlling structure can really be a good aid in locating the mineralized areas. In this research, presence of galena, chalcopyrite, sphalerite and bornite minerals were found at several fault zones and also brecciated quartz. It could be interpreted that several site locations are Epithermal Intermediate Sulfidation type deposit zones. However, the research area was generally classified as an Epithermal Low Sulfidation type deposit.

[发布机构] Geological Engineering, Universitas Pembangunan Nasional Veteran Yogyakarta, Indonesia^1;Post-Graduate Program, Geological Engineering, Universitas Pembangunan Nasional Veteran, Yogyakarta, Indonesia^2

[效力级别] 矿业工程

[关键词] Alteration zones;Controlling structure;Epithermal systems;Fractures and faults;Geological structures;Low-sulfidation;Mineralization process;Pb-zn deposits