Possibilities of determination of alteration degree of rocks by thermogravimetry |
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| Authors: | P Rózsa S Szakáll Éva Balázs A Bartha |
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| Institution: | (1) Department of Mineralogy and Geology, University of Debrecen, 4032 Debrecen, Egyetem tér 1, Hungary;(2) Department of Mineralogy and Petrology, University of Miskolc, 3515 Miskolc-Egyetemváros, Hungary;(3) Geological Institute of Hungary, 1143 Budapest, Stefánia út 14, Hungary |
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| Abstract: | Rhyolite-rhyodacite tuff samples were analysed by X-ray powder diffraction, ICP-OES and thermogravimetric (TG) methods to
determine mineral and major element composition as well as different types of bound water, respectively. Similarly to CIA
values, some TG parameters (H2OI] — water released up to ca. 200–220°C; H2OIII] — water loss above 500–550°C and H2OI+III]) show positive correlation to the amount of secondary minerals. Moreover, these parameters are in close positive
correlation to CIA values. Our results suggest that TG determination of different types of bound water may serve as a useful
tool for estimation and characterisation of alteration degree of rocks. |
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| Keywords: | alteration bound water thermogravimetry |
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