Application of magnetometery, electrical resistivity and induced polarization for exploration of polymetal deposits,

An efficient method in exploration of sulfide minerals (i.e. galena and sphalerite) is the application of geo-electrical techniques including the induced polarization (IP) and the electrical resistivity (Rs). 2D electrical profiling in exploration geophysics, while gives the best results which there would be sufficient information about the strike and the trend of the mineralization. Halab polymetal deposit consists of different ore mineralization such as Pb – Zn, Fe, Cu, Au and Ag. In this paper combined geophysical methods (Magnetometery/IP/Rs) for different types of minerals have been conducted in order to image the extension of ore occurrences at depth. According to paragenesis of galena and sphalerite with Fe-bearing minerals (e.g. magnetite and hematite), in the area of interest; first magnetometery surveys is used to determine the main strike and the trend of the mineralization. Subsequently based upon the obtained results, 7 IP-Rs profiles have been designed and surveyed to distinguish ore mineralization at depth and to acquire general information about dip and thickness parameters, consequently suggest the optimum borehole locations. Significant results of this work are the adaptation of high-correlated geo-electrics and magnetometery data and as well the lower uncertainty arising from combined geophysical methods in polymetal exploration.