Comparison of resistivity and chargeability inversions integrating rock physical properties and geological models.

Direct current and induced polarisation methods are applied in mining exploration to identify sulfide sources or for the structural study of the subsurface, allowing us to infer discontinuities or permeability zones which may be associated with hydrothermal systems in copper porphyry systems. In this study, DCIP survey data are inverted to obtain resistivity and chargeability models used to define drilling targets. Geological and geochemical surface mapping is used in mineral exploration to identify areas of economic interest, and drill holes to study the subsurface. This geological and geochemical information is complemented with petrophysical information, in this case magnetic susceptibility, resistivity and chargeability measured on drill core. This petrophysical information is used to constrain inversions in conjunction with a lithological model of the subsurface, which was obtained with a drilling campaign of four holes.