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Browsing by Subject "reflectance spectroscopy"

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  • thumbnail.journal.alt
    Item type:Thesis, Access status: Restricted ,
    Constraining the mineralogy of geochemical variations of spectral data through probe analysis, St.Ives, Kambalda, Western Australia
    (Data obrony: 2010-04-12) Bil, Bartłomiej
    Wydział Geologii, Geofizyki i Ochrony Środowiska
    Fe, Mg and Al content changes in chemical composition of silicate minerals have influence on infrared reflectance spectra and show correlation. Based on diamond drill cores from the Noresman-Wiluna Greenstone Belt, St.Ives Gold Camp, 2 km from Kambalda (Western Australia), EDS and HyChips analyses were carried out. The HyChips is a device which uses reflectance spectroscopy to determine mineralogy in samples. All results are described by their typical wavelength and then crosslinked with the FeO/FeO+MgO ratios. The results of correlation are basic for further dependence of iron, magnesium and aluminium content variations vs gold occurrences and in distance from them. Chlorites and amphiboles have the highest potential in indicating new gold deposits. Fe, Mg and Al in relation to distance from gold occurrences show weak correlation. Final results confirms that reflectance spectroscopy method used in HyChips is very perspective and should be developing due to cheap and fast analyses in ore deposits exploration.