Authors / CoAuthors
Skirrow, R.G. | Schofield, A. | Huston, D.L. | Connolly, D.P.
Abstract
The formation of iron oxide copper-gold (IOCG) deposits requires the conjunction in time and space of four essential components of the ore-forming mineral system: (1) energy source(s) to motivate the flow of hydrothermal fluids; (2) sources of ore components (metals, sulphur) and fluids; (3) favourable 'architecture' of permeable pathways for fluids, and (4) physico-chemical gradient sites for ore deposition. These components have been identified for IOCG systems in northern Queensland and South Australia, focussing on uranium-bearing IOCG deposits, during multidisciplinary studies of the energy potential of these regions. Each of the four system components was mapped using existing and newly acquired geological, geophysical and geochemical data. Using mineral potential modelling based on established approaches, maps of potential for uranium-bearing IOCG deposits (and for other uranium mineral systems) were created for each of the two regions. In north Queensland the under-cover extensions of the IOCG province hosted by the Mt Isa Eastern Succession were identified as highly prospective for IOCG deposits, although the potential for uranium-bearing systems appears to be more limited due to the relatively deep crustal levels of exposure. Potential for Paleozoic IOCG systems was also identified in the Etheridge Province. In South Australia the well known early Mesoproterozoic Olympic IOCG Province in the eastern Gawler Craton is proposed to extend westwards via the Mt Woods Inlier into the Coober Pedy Ridge region. A key result is the identification of IOCG potential in the northern Curnamona Province, of equivalent age and setting to that in the Gawler Craton
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73536
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- External PublicationAbstract
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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2012-02-15T00:00:00
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