Golden Cross has applied for four tenements within the Gawler Craton, South Australia. The tenements are located within the highly prospective Olympic Domain, which hosts world-class iron-oxide-copper-gold-(uranium) (IOCG-U) deposits such as Olympic Dam, Prominent Hill and the recently discovered Carrapateena.  The deposits area characterised by extensive hematite-magnetite (iron) alteration and brecciation and typically comprises disseminated chalcopyrite, chalcocite and bornite copper mineralisation with associated gold and often include uranium and rare earth elements (REEs).
Located within basement granites and volcanic rocks, these deposits are typically covered by several hundred meters of sedimentary sequences and consequently exploration techniques for this style of deposit are predominantly geophysical. 

Discrete magnetic or gravity anomalies that appear on the available regional geophysical data have been identified within each of the tenements. These will be targeted for further exploration including geophysical modelling and detailed ground geophysical (gravity and magnetic) surveys. 

The Koolymilka tenement occurs 30km west of Olympic Dam Mine, in the northwestern section of the Olympic structural and mineralisation domains. The basement rocks include the Hiltaba Suite Granites and Gawler Range Volcanics that have been proposed as the source for copper-gold mineralisation in the province as well as providing the heat source to generate fluid flow, resulting in the extensive alteration events associated with IOCG-U mineralisation. The tenement occurs on the margins of the Torrens Dome (an area of comparatively elevated basement topography), that hosts the Carrapateena deposit. 

Previous exploration in the tenement area has been minimal but previous drilling in the surrounding area shows that volcanics are present at 100m depth to the west of the tenement and basement is present at 800-1000m depth to the east of the tenement. 

The Oolgelima Hill, Codna Hill and Warriner Creek tenements occur on the margins of the Mt Woods Inlier, which hosts the Prominent Hill copper-gold orebody (current reported total mineral resources are Prominent Hill Copper 174.1 Mt at 1.4% Cu, 0.6 g/t Au and Prominent Hill Gold 109.1 Mt at 0.09% Cu and 1.2 g/t Au). 

The Mt Woods Inlier is a region of shallow Palaeoproterozoic and Mesoproterozoic basement rocks, although exposure is very limited. Rock types comprise high grade Palaeoproteroizoic metasedimentary rocks intruded by syn- to post tectonic granitoids (e.g. the Balta Granite, a polyphase Hiltaba Granite equivalent, comprising non-foliated brick-red granite, porphyritic granites and hybrid granites). The metasediments are characterised by an intense magnetic response in regional aeromagnetic data, which reflects a combination of magnetite-rich precursor sediments including BIFs, magnetite alteration and interpreted probably mafic intrusive bodies. 

The inlier is bounded by major shear zones, the most prominent of which is the Karari Fault Zone which bounds the east-west trending Coober Pedy Ridge.
The Mt Woods Inlier underwent all the thermal and mineralising events that affected the Olympic Domain of the Gawler Craton and IOCG-style alteration is widespread. The Prominent Hill deposit occurs on the southern margin of the Mt Woods Inlier.
Little exploration of the basement has been undertaken in this area, with sparse drilling. Where drill holes have intersected the basement, it has been found relatively close to the surface, at 50-250m depth.