Using a new exploration model for predicting the setting of copper deposits in the Adelaide Fold Belt, where there has been little significant metallic mineral exploration for many years, Copper Range's chosen initial exploration targets have been structurally-controlled, secondary near-surface oxide copper deposits which are related to hydrothermal events and are focussed along faults active late in the deformational history of the region. The company is also targeting primary sediment-hosted copper deposits. It believes that much of the previous exploration for copper in the Adelaide Fold Belt has been based on the assumption that copper mineralisation was emplaced either during or shortly after deposition of the host sedimentary rocks, i.e. as syngenetic or early diagenetic deposits. Thus exploration has been largely confined to the stratigraphic horizons that hosted significant mineralisation at Burra (Skillogallee Dolomite of the Burra Group) and at Kapunda (Tapley Hill Formation, Umberatana Group), and to areas of known lesser mineralisation, e.g. Wyacca, Wirrawilka, etc. By contrast, Copper Range's view is that primary sediment-hosted stratiform sulphide bodies may be epigenetic, forming in reactive strata and in dilatant sites adjacent to major through-going structures. The use of spectral (satellite) imagery has been used to identify zones of alteration that may indicate the presence of appropriate stratigraphic horizons and a history of substantial fluid movement. This method has generated unexplored targets not related to known mineralisation. The extent of the mineralised system evident within the Worumba Anticline suggests that significant potential still exists for the discovery of possible high-grade extensions to known deposits. As a PACE Initiative Year 3 project, shallow RC drilling (38 holes for a total of 1446 m) was undertaken at the Birthday prospect (in the former Wirrawilka prospect area), targeting an inferred copper oxide blanket developed in association with the outcropping malachite-bearing dolomite ridge. It was hoped that porous, 'receptive' lithologies, such as sandstone and shale, might have allowed emplacement of a copper oxide body, through supergene enrichment, that was not purely restricted to fracture surfaces and joint planes. Cross sections plotted through resulting drill hole mineralised intercepts clearly demonstrate that grade is confined to dolomite and sandstone lithologies. The drilling undertaken at Birthday prospect did intersect some oxide copper mineralisation of the style anticipated in the target model. This was mainly as malachite, and some azurite along joint planes and fractures within dolomite. Sandstone-hosted mineralisation was present mainly as disseminated, or sometimes blebby, chalcopyrite, which had oxidised to malachite in the weathered environment. The host sandstone units are thin and lenticular, as made evident at Jelly and Ice Cream traverse. No copper was present in the shale or associated with any structures, which negates the oxide blanket model in this area. It is considered by Copper Range that the mineralised horizons at Birthday prospect are too thin and discontinuous, and that the grade is too low, to warrant further drilling there. However, whilst the drilling did not locate the desired copper oxide blanket target, it did confirm the lithologically-controlled nature of the mineralisation, which lends support to the pursuit of copper mineralised targets based on a sediment-hosted model, and highlights the potential for finding significant mineralisation of this style both locally at Wirrawilka and throughout Copper Range's other tenements within the Adelaide Fold Belt.