Abstract:

The Sawusi Pb-Zn deposit is situated at the southern rim of Siberia plate. The deposit is hosted in felsic volcanic flows, volcanoclastics interlayered with terrigenous clastics and carbonates of the Kangbutiebao Formation of Early Devonian. The deposit is genetically related with marine volcano activities. The mineralization corresponds well with the 1∶50,000 Ag-As-Zn-Bi-Cu-Mo-Au-Sb-Co-Ni geochemical anomalies, and single element anomalies, such as Ag, As, Pb and Zn, are nearly matched with the distributions of the orebodies, especially for Zn the anomalous center is almost coherent with the distribution of the orebodies. Geophysical anomalies also showed high values of chargeability, low resistivity, and matched well with ground mineralized/altered zones. The magnetic anomalies are matched well with the IP (Induced Polarization )anomalies, but its anomaly width is narrower than that of the IP. The sounding IP and TEM (Transient Electromagnetic Method)anomalous zones intersect three mineralized zones which are located on the No.Ⅱ mineralized/altered zones. After comprehensive analysis of geological setting, geochemical anomalous zones, geophysical anomalies of Sawusi Pb-Zn deposit, the geologicalgeophysicalgeochemical model of the mineralization is established.

Key words: Pb-Zn deposit, comprehensive information, prospecting method, prospecting model;Sawusi