1. An approach to mineral potential mapping using a mineral systems approach: an example of IOCG deposits in the NT Anthony Schofield and David Huston

2. Targeting uranium and copper-gold systems in Australia using a mineral systems approach Challenges: ~80% covered Relatively small footprint of most mineral deposits  Need to expand the search space

3. Targeting uranium and copper-gold systems in Australia using a mineral systems approach Mineral systems 1.Sources 2.Fluid-flow drivers 3.Fluid-flow pathways and architecture 4.Depositional sites and mechanisms Huston et al., 2012

4. Targeting uranium and copper-gold systems in Australia using a mineral systems approach Mapping mineral systems Mineral system component Conceptual mineral system processes Mappable geological proxies Input datasets Focus on identifying key mineralising processes and translating these into geological proxies Importance of conceptual process Applicability mappable proxy Confidence in input datasets Estimate of uncertainty Estimate of significance Mineral potentialWeightings assigned

5. IOCG conceptual criteria Targeting uranium and copper-gold systems in Australia using a mineral systems approach Sources Drivers pathways Deposition IOCG assessment Uranium Brines Volatiles Cu/Au Mantle melts High-T crustal melts Crustal margins Fluid flow Fe-rich rocks Iron oxide alteration

6. IOCG mappable criteria Targeting uranium and copper-gold systems in Australia using a mineral systems approach Sources Drivers pathways Deposition IOCG assessment U-rich igneous Basins, magmas F-rich igneous Mafic igneous Mafic magmatism A- to I-type granites Sutures Faults Solid geology Geophysical inversions

7. Aileron IOCG assessment Targeting uranium and copper-gold systems in Australia using a mineral systems approach

8. Mapping pathways and architecture Targeting uranium and copper-gold systems in Australia using a mineral systems approach Interpreted faults Central Australian Suture interpreted from Contrasting geological histories Seismic data Granite geochemistry

9. Mapping pathways and architecture Targeting uranium and copper-gold systems in Australia using a mineral systems approach +

10. Aileron IOCG system components Targeting uranium and copper-gold systems in Australia using a mineral systems approach Sources Drivers Deposition IOCG assessment

11. Aileron IOCG potential Targeting uranium and copper-gold systems in Australia using a mineral systems approach Potential greenfields IOCG province in the southern Aileron?

12. Phone: +61 2 6249 9111 Web: www.ga.gov.au Email: anthony.schofield@ga.gov.au Address: Cnr Jerrabomberra Avenue and Hindmarsh Drive, Symonston ACT 2609 Postal Address: GPO Box 378, Canberra ACT 2601 Thank you