Exploration over a structurally complex part of the Nackara Arc region centred ~30 km north-east of Peterborough has sought economic Telfer-type gold deposits hosted within folded domal structures in Adelaidean strata, which have been intruded during the Delamerian Orogeny by a possible fractionated, bimodal mafic-felsic igneous suite. During licence Year 1, farminee Goldstream Mining conducted reconnaissance field visits that included rock chip sampling (34 grab samples) and the collection of 2 kg stream sediment samples (209 samples) for bulk cyanide leach assaying of low level gold content. The latter work defined some gold-anomalous catchments with some coincident gold and copper anomalies. The BCL sample sites were also tested by conventional minus 80 mesh stream sediment sampling, to undergo AAS analysis for a wider range of trace elements, but no distinct anomalism was evident. During the second licence year, Goldstream performed infill surface geochemical sampling of drainage gold-copper anomalies (98 BCL samples collected), accompanied by prospecting and further outcrop rock chip sampling (107 samples, including some float and lag samples). Nine geochemical target areas were defined and examined in detail, and four of these were selected for follow-up minus 2 mm soil particle and buried bedrock sampling work. During licence Year 3, Goldstream collected and assayed 5 rock chip samples plus 232 minus 2 mm soil samples. No significant assay results were returned except from the Nackara Creek prospect, where highest values were 170 ppb Au, 17 ppm Cu and 88 ppm Ag. To test bedrock under cover at two discrete magnetic lows and two magnetic highs, 11 vertical RAB holes were drilled in late September 1999 for a total penetration of 417 m. Drill targets were generated from an interpretation of regional aeromagnetic survey TMI data done by Chris Anderson and Associates. Five-metre composite drill cuttings samples were analysed for Au, As, Cu, Ag, Pb and Zn. A peak gold value of 320 ppb Au was returned from within a transported Recent unconsolidated cover sequence above a fine grained mafic intrusive rock. Other notable results include 205 ppm Cu, 0.6 ppm Ag, 125 ppm Pb and 660 ppm Zn recorded from within similar buried mafics, and from quartz-feldspar-biotite granitoid rocks and the overlying fine grained Adelaidean metasediments. At this point, Goldstream thought that its surface geochemical sampling had failed to identify any anomalies of significant size, and the anomalous gold values returned from the Nackara Creek area were not investigated any further. Likewise, it was felt that the RAB drilling had failed to identify any anomalous basement geochemistry associated with the aeromagnetic targets. Therefore the company decided to withdraw from the joint venture, and this action was assented to on 4/11/1999. During Licence Year 4, after exploration management had reverted to the Filsell family, new activities included detailed field geological mapping, additional soil/rock/stream sediment sampling (87/469/23 samples respectively), a geophysical data interpretation undertaken by AngloGold Exploration, and petrographic examination of the RAB drillhole basement rock samples (38 thin sections studied). This work highlighted both the significance of mafic and felsic igneous activity in the genesis of known mineralisation, and also the potential for occurrence of previously unrecognised styles of mineralisation associated with intense magmatic-sourced moderate to high temperature alteration. Surface geochemical sampling undertaken over some of the altered zones produced significantly anomalous base and precious metal values which it was believed warranted follow-up sampling and drilling.