The Three Creeks EL 3567 covers, for the most part, the north-westerly plunging Yednalue Syncline. Lying to the south-east of the Worumba Anticline (a diapiric structure cored by disrupted Callanna Group), the syncline comprises Umberatana Group rocks, with its limbs consisting of Tapley Hill Formation siltstones and sandstones, Sunderland Formation, Etina Formation, Enorama Shale and Trezona Formation. Copper Range took up this ground to explore for possible epigenetic, primary sediment-hosted stratiform copper sulphide bodies that could have formed within reactive strata and in dilatant sites adjacent to significant through-going structures. Aster satellite imagery was used to identify areas of surface evident alteration and fluid flow, and targets were established at the Siccus and Three Creeks prospects near Yednalue. Reconnaissance rock chip sampling was undertaken at these prospects. Geochemical sampling was also carried out over some old secondary copper workings that are part of the Wyacca group of abandoned mines. These workings lie to the north-east of the main Wyacca mining area, and occur on sulphide bearing carbonate veins. Additionally, one rock chip sample and twelve soil samples were taken from the Top Bore area. The Hawk prospect situated in the northern subarea of EL 3567 was originally delineated on the basis of an interpretation of ASTER imagery, which had indicated an extensive, 3 km x 1.5 km area of sericitic alteration in bedrock outcrops. Geological mapping was undertaken subsequent to an anomalous gold value being returned from assaying of a float sample taken from this location. A reconnaissance BLEG stream sediment sampling programme was then carried out there which identified elevated gold values of up to 1.9 ppm Au in the minus 80 mm sediment fraction. This discovery was followed up with further, denser stream sediment sampling plus a grid-based soil sampling programme, that identified a wide zone of > 1 g/t soil gold anomalism. The Hawk prospect is located within a structural corridor lying between the town of Hawker and an interpreted domal structure at Martins Well, that is believed to represent an interference zone between two tectonic regimes, where a high degree of crustal fluid flux may have existed during past orogenic compression. The prospect occurs mainly within Wilyerpa Formation quartzite, near its contact with the Tindelpina Shale member of the Tapley Hill Formation. It is known that the contact between Yudnamutana Subgroup sediments (Appila Tillite, Wilyerpa Formation) and the Tapley Hill Formation hosts gold and base metal mineralisation throughout the Adelaide Fold Belt. Locally at Hawk, recent geologic mapping had indicated the presence of thrust faults caused by a compressional event that are offset by NE-trending transfer faults which have oversteepened some of the thrusts. Extensional faults previously mapped in the same region are considered most likely due to the relaxation of thrusted blocks as compressional deformation ended. Copper Range's geochemical exploration work during the first two licence years involved overall the collection of 152 soil, 144 stream sediment and 59 rock chip samples. Because the rock chip analyses failed to indicate the source of the stream sediment and soil gold anomalism, 3 vertical RC holes with a total penetration of 229 m were drilled during August 2008 to clarify the local stratigraphy and structure in the gold anomalous zone at Hawk, and particularly to test the boundary between the siltstone and quartzite and to assess the mineral content of quartz veins present at this location. Weakly anomalous gold averaging 0.15 ppm Au over a 14 m interval, and peaking at 0.33 ppm Au, was intersected in drillhole HKRC01 within a distinctly green-coloured altered siltstone, close to the contact with the quartzite. None of the intervals with quartz veining contained anomalous gold, and thus it is possible that the gold is sediment-hosted, with precipitation having occurred at a reducing boundary onto pyrite within the siltstone. The flow of mineralising fluids is likely to have been concentrated along shears and other faults in the Hawk area, so it may be true that there remains potential for identifying other drillable targets nearby. Due to the lack of significant mineralisation evident in the drilled rocks, Copper Range elected to allow the tenement to expire.