Comparison of crosshole radio imaging and electrical resistivity tomography for mapping out disseminated sulphide mineralisation at a surface test site in Mpumalanga, South Africa

Abstract

High-resolution crosshole imaging techniques are proving to be useful tools for mapping out mineralisation between exploration boreholes. Radio Tomography (RT) and electrical resistivity tomography (RESTOM) surveys were conducted at a disseminated sulphide test site in South Africa. The RT and RESTOM results correlate well, but contradict the existing interpretation as inferred from geological logs. It is concluded that the integrated application of high-resolution crosshole imaging techniques could play a major role in second-phase base metal exploration.