A Mobile Metal Ion (MMI) geochemical survey was conducted over known Pb-Zn-Ag-Au mineralisation within Cambrian Kanmantoo Group metasediments of the Tapanappa Formation at the Angas prospect near Strathalbyn, South Australia. A similar survey was also conducted over the Strathburn prospect, 2 km north of the Angas prospect. This geochemical technique is relatively new, and these two prospects were chosen to trial its effectiveness in delineating blind, economic, base/precious metal mineralisation. Preliminary results have shown that this technique is very effective at delineating base/precious metal anomalies sharply, distinctively and accurately. Another obvious result is MMI's ability to delineate anomalies in the rare and lesser elements like Sb and Bi. These elements are normally found in concentrations below the detection limits of standard soil geochemistry. Preliminary test results by analytical companies have shown this method to be effective at detecting mineralisation to a depth of 700 metres. Therefore, Amdel has called its analytical leaching substrates DEEPLEACH to represent the depth of penetration. The process by which the metal ions are transported to the surface is not clearly understood. However, several research articles indicate that transportation could be a result of gas movements through the ore body, formation of hydrides, chlorides, or other volatile metallic species, volatilisation of sulphides, formation of aerosols, or through capillary transport. The MMI results were compared with conventional soil sampling and drilling results from earlier company exploration work, where possible. The MMI method outlined the mineralised horizon at the Angas prospect very clearly, and also delineated three other anomalies currently untested by drilling. At the Strathburn Prospect, sampling over two traverses outlined several anomalies that are also yet to be adequately tested with drilling. This trial has also defined an optimum suite of elements for use in exploration in the Kanmantoo Group for buried sedex style mineralisation: Au, Cu, Pb, Zn, Ag, As, Bi and Sb. As a result of these surveys, it has become clear that follow-up drilling and MMI surveys targeting base and precious metal mineralisation are required in the Angas and adjoining areas. The structural complexity of the Kanmantoo Group allows excellent potential for economic base and precious metal mineralisation to be discovered at depth. Therefore, MMI geochemistry, in the authors' opinion, is a highly recommended tool for the exploration, discovery and delineation of potentially economic mineralisation within covered Cambrian, Kanmantoo Group metasediments.