Exploration for possible economic Mississippi Valley - type stratabound base metal deposits formed in Lower Cambrian limestones now exposed in the synclinal valley lying between the Chace and Druid Ranges was conducted via regional stream sediment sampling (1766 samples) and semi-detailed, 1:12,000 scale geological mapping. An isolated minor zinc anomaly (170 to 1500 ppm Zn on a background of 100 ppm) and elevated tungsten values of 100-250 ppm W were followed up by stream sediment (295 samples) and rock chip (1000 samples) check sampling, but no repeat values of note were found. Iron and manganese-rich Cambrian dolomitic shales outcropping over a 7-mile strike length on the north-western side of the Druid Range were found to contain trace silver concentrations at 8 locations. During December 1969-January 1970 11 percussion drillholes totalling 1400 feet of penetration were put down to look for possible economic manganese or silver mineralisation in the bedrock beneath the secondary enriched zone. However, no metal values of interest were recorded from sampling of the thinly laminated, near vertically-dipping unweathered shales.