Mineralogical and structural characterization of zeolitic tuff from the Slanci deposit, Serbia

  • Katarina M. Mihajlović University of Belgrade, Faculty of Mining and Geology, Đušina 7, 11000 Belgrade, Serbia. https://orcid.org/0009-0007-2001-5794
  • Jovica Stojanović Institute for Technology of Nuclear and Other Mineral Raw Materials, Franche d’Epere 86, 11000 Belgrade, Serbia. https://orcid.org/0000-0002-2752-6374
  • Ana S. Radosavljević-Mihajlović Institute for Technology of Nuclear and Other Mineral Raw Materials, Franche d’Epere 86, 11000 Belgrade, Serbia. https://orcid.org/0000-0002-9194-161X
  • Ivana Jelić Institute for Technology of Nuclear and Other Mineral Raw Materials, Franche d’Epere 86, 11000 Belgrade, Serbia. https://orcid.org/0009-0000-9901-9323
  • Nikola Vuković Institute for Technology of Nuclear and Other Mineral Raw Materials, Franche d’Epere 86, 11000 Belgrade, Serbia. https://orcid.org/0000-0002-3607-5907
  • Slavica Mihajlović Institute for Technology of Nuclear and Other Mineral Raw Materials, Franche d’Epere 86, 11000 Belgrade, Serbia. https://orcid.org/0000-0003-0904-3878
  • Vladan Kašić Institute for Technology of Nuclear and Other Mineral Raw Materials, Franche d’Epere 86, 11000 Belgrade, Serbia. https://orcid.org/0000-0002-4430-567X
DOI: https://doi.org/10.2298/GABP251014011M
Keywords: Ca-heulandite, zeolitic tuff, Rietveld analysis, DTA/TG analysis

Abstract

Lake Miocene deposits located east of Belgrade in the Danube bend, around Veliko Selo and Slanci, are rich in zeolitic tuffs of the heulandite type. This paper presents mineralogical and structural investigations of zeolitic tuffs in which the dominant phase is Ca‐heulandite with a Si/Al ratio of 3.78. Volcanic glass and biogenic amorphous silica are present as accompanying components. Quantitative X‐ray powder analysis determined the following mineral composition: heulandite (85.1%), quartz (1.9%), muscovite (5.9%), albite (6.6%), orthoclase (0.6%) and calcite (0.21%). The structure was refined in the space group C2/m, with a disordered distribution of Al and Si within the tetrahedral framework. The following methods were applied: powder X‐ray diffraction on a polycrystalline sample (XRPD), scanning electron microscopy and energy-dispersive X‐ray spectroscopy (SEM/EDS), and differential thermal and thermogravimetric analysis (DTA/DTG/TG).

Published
2025-12-26
How to Cite
Mihajlović, K., Stojanović, J., Radosavljević-Mihajlović, A., Jelić, I., Vuković, N., Mihajlović, S. and Kašić, V. (2025) “Mineralogical and structural characterization of zeolitic tuff from the Slanci deposit, Serbia”, Geološki anali Balkanskoga poluostrva, 86(2), pp. 57-71. doi: 10.2298/GABP251014011M.
Issue
Vol 86 No 2 (2025): Geološki anali Balkanskoga poluostrva
Section
Original Scientific Paper

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