Geochemistry of ore metals at very high temperatures. The world’s largest copper and gold mines occur in extinct volcanoes around the Pacific Rim. Understanding how these essential metals are mobilised from magmas in the roots of volcanoes to become ore deposits and how to recognize where this has occurred is crucial in exploration for new deposits.
Organic geochemistry of the McArthur River hydrothermal deposit. Exploration for hydrothermal ore deposits in sedimentary basins has many problems because of the lack of any general agreement on the mechanisms of formation of major deposits. This proposed research will focus on the fundamental issue of the interaction of organic matter and mineralizing fluids in contributing to ore mineral deposition. Given that the McArthur River orebody is an exquisitely preserved example of a hydrothermal dep ....Organic geochemistry of the McArthur River hydrothermal deposit. Exploration for hydrothermal ore deposits in sedimentary basins has many problems because of the lack of any general agreement on the mechanisms of formation of major deposits. This proposed research will focus on the fundamental issue of the interaction of organic matter and mineralizing fluids in contributing to ore mineral deposition. Given that the McArthur River orebody is an exquisitely preserved example of a hydrothermal deposit it will thus enable a comprehensive organic geochemical investigation to elucidate the role of organic matter in ore formation. The outcomes will benefit the Australian mineral exploration industry by refining current ore genesis models.Read moreRead less
Ore deposits and tectonic evolution of the Lachlan Orogen, SE Australia. Ore deposits and tectonic evolution of the Lachlan Orogen, SE Australia. This project aims to develop and test models to evaluate past tectonic processes and configurations in South-east Australia, using both new and existing geological, geophysical and isotopic data. Over the past 550 million years, plate tectonic processes have formed metal-rich mineral deposits in South-east Australia. The project will identify areas of ....Ore deposits and tectonic evolution of the Lachlan Orogen, SE Australia. Ore deposits and tectonic evolution of the Lachlan Orogen, SE Australia. This project aims to develop and test models to evaluate past tectonic processes and configurations in South-east Australia, using both new and existing geological, geophysical and isotopic data. Over the past 550 million years, plate tectonic processes have formed metal-rich mineral deposits in South-east Australia. The project will identify areas of high potential for economically valuable ore deposits, enabling more efficient prioritisation of mineral exploration efforts. This is expected to increase the probability of significant ore deposit discoveries leading to national economic benefit.Read moreRead less
Isotopic fractionation in ore metals (Cu, Fe and Zn): A new window on ore-forming processes. Stable isotopes of common ore metals (e.g, copper and iron) are new tools for investigating ore deposits. Our data suggest that metal isotopic variations can provide new insights into mechanisms operative during formation of ore deposits. Stable metal isotopes also show promise as a new exploration tool for identifying the location of economic mineralisation within large prospective terrains; e.g., weakl ....Isotopic fractionation in ore metals (Cu, Fe and Zn): A new window on ore-forming processes. Stable isotopes of common ore metals (e.g, copper and iron) are new tools for investigating ore deposits. Our data suggest that metal isotopic variations can provide new insights into mechanisms operative during formation of ore deposits. Stable metal isotopes also show promise as a new exploration tool for identifying the location of economic mineralisation within large prospective terrains; e.g., weakly vs. strongly mineralised zones in a volcanic belt.
This project will provide fundamental baseline data that will help elucidate the processes that cause metal isotope variations. This will allow stable metal isotopes to be used much more effectively by the mining and exploration industries.
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The lost ocean of eastern Australia and its critical metals endowment. This project aims to unravel the tectonic origin and economic potential of ultramafic rocks (rocks which host elevated concentrations of nickel, cobalt, chromium, and platinum-group elements). Such rocks are outcropping in eastern Australia along a contorted ~1500 km long belt that may record relics of an ancient ocean. Through detailed mapping and cutting-edge analytical techniques, the project is expected to fill a crucial ....The lost ocean of eastern Australia and its critical metals endowment. This project aims to unravel the tectonic origin and economic potential of ultramafic rocks (rocks which host elevated concentrations of nickel, cobalt, chromium, and platinum-group elements). Such rocks are outcropping in eastern Australia along a contorted ~1500 km long belt that may record relics of an ancient ocean. Through detailed mapping and cutting-edge analytical techniques, the project is expected to fill a crucial knowledge gap in Australian tectonics, while providing information on ore mineralisation. The expected outcomes, including new tectonic models unveiling the scale, geometry, and economic potential of the ultramafic bodies, could benefit critical mineral exploration, carbon storage solutions, and geoecology conservation.Read moreRead less
Toward the use of metal stable isotopes in geosciences. Metal stable isotopes (MSI: Mg, Fe, Cu, Zn, Ga) have enormous potential applications (basic and applied) in Geosciences and beyond. However the use of these elements as geochemical tracers and petrogenetic tools requires: (1) the definition of their isotopic composition in Earth key reservoirs and in reference materials such as the chondritic meteorites; (2) Understanding and quantification of the causes of MSI fractionations during geolog ....Toward the use of metal stable isotopes in geosciences. Metal stable isotopes (MSI: Mg, Fe, Cu, Zn, Ga) have enormous potential applications (basic and applied) in Geosciences and beyond. However the use of these elements as geochemical tracers and petrogenetic tools requires: (1) the definition of their isotopic composition in Earth key reservoirs and in reference materials such as the chondritic meteorites; (2) Understanding and quantification of the causes of MSI fractionations during geological processes. By a unique combination of in-situ and solution geochemical analytical techniques avaliable now through frontier technology and method development we aim to establish a conceptual and theoretical framework for the use of MSI in Geosciences.Read moreRead less