Rapid mineralogical and geochemical characterisation of the Fisher East nickel sulphide prospects,Western Australia,using hyperspectral and pXRF data |
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| Institution: | 1. Geological Survey of Western Australia, Department of Mines and Petroleum, 100 Plain Street, East Perth, Western Australia 6004, Australia;2. Mineral Resources, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Australian Resources Research Centre (ARRC), 26 Dick Perry Avenue, Kensington, Western Australia 6151, Australia;3. Centre for Exploration Targeting, ARC Centre of Excellence for Core to Crust Fluid Systems, The University of Western Australia, 35 Stirling Highway, Crawley, Western Australia 6009, Australia;1. Earth Sciences Dept., Università degli Studi di Milano, Italy;2. CET/CCFS, School of Earth Sciences, The University of Western Australia, Perth, Western Australia, Australia;1. State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;3. Department of Earth and Atmospheric Sciences, Indiana University, Bloomington, IN 47405, USA;4. National Research Center for Geoanalysis, Beijing 100037, China;1. Anglo American Exploration Australia, 245 Canning Highway, Como, WA 6014, Australia;2. School of Earth and Ocean Sciences, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom;3. Best Geochemical Consulting, PO BOX 2082, Churchlands, WA 6014, Australia;4. CODES, University of Tasmania, Private Bag 79, Hobart Tasmania 7001, Australia;1. School of Earth Science and Geological Engineering, Sun Yat-sen University, 510 275 Guangzhou, PR China;2. Institute of Geology and Mineral Exploration, Lefkovrisi, 50100 Kozani, Greece;3. Dipartimento di Scienze della Terra, Università degli Studi di Milano, via S. Botticelli, 23-20133 Milano, Italy;4. Foundation for Research and Technology-Hellas, Institute of Chemical Engineering Sciences (FORTH/ICE-HT), P.O. Box 1414, GR-26504 Rio-Patras, Greece;5. Department of Materials Science, University of Patras, GR-26504 Rio-Patras, Greece |
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| Abstract: | The use of Shortwave Infrared (SWIR) and Thermal Infrared (TIR) hyperspectral data in mineral exploration has been well documented in many mineralisation types, but is limited in komatiite-hosted nickel sulphide deposits. This project combines hyperspectral, Portable X-ray Fluorescence (pXRF) and whole-rock geochemical data to assess different analytical techniques in the exploration of these deposits. We use the Fisher East nickel sulphide prospects, Western Australia for our case study. The Fisher East prospects lie in an area of the eastern goldfields that has historically been underexplored and understudied. The rocks have undergone intense deformation with primary igneous textures being destroyed, along with strong alteration to talc carbonate assemblages. Combining different analytical tools allowed for differentiation of A and B-zones of original komatiite flows, and the reconstruction of original volcanological facies in a setting where whole rock chemistry as well as igneous textures have been substantially modified by metamorphism. By using different lithogeochemical techniques including pXRF, this study shows the Fisher East prospects are hosted within channelised komatiite flows, and have similar characteristics to Kambalda style deposits. |
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| Keywords: | Fisher East Komatiite-hosted nickel Hyperspectral pXRF |
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