A programme of reconnaissance and infill geochemical stream sediment sampling, conducted over an area extending to the north-east and south-east of Hawker, examined the base metal potential of the Lower Cambrian limestone sequence overlying the Pound Quartzite, and of diapiric rafted sediments and associated dolerite intrusive rocks which disrupt this sequence. Minor anomalies were found which are related to the following geological features: 1. Copper mineralisation in the Arkaba diapir that is apparently derived from (a) basic intrusions & (b) dolomite 2. Ochreous clays developed on the Parara Limestone which are commonly rich in Cu, Pb and Zn 3. Anomalously high base metal values in the Parachilna Formation 4. Sparse galena mineralisation located in Parara Limestone outcropping to the south of the Arkaba diapir. None of the above anomalies were considered to be indicative of the presence of substantial mineralisation.