TY  - JOUR
AU  - Radosavljević-Mihajlović, Ana S.
AU  - Daković, Aleksandra S.
AU  - Kašić, Vladan
AU  - Mitić, Vojislav V.
AU  - Stojanović, Jovica N.
AU  - Sokić, Miroslav D.
AU  - Marković, Branislav R.
PY  - 2018
UR  - https://dais.sanu.ac.rs/123456789/5250
AB  - This paper presents mineralogical and crystallographic characterization of the zeolitic tuff from the Novakovic deposit, Republic of Bosnia and Herzegovina. The zeolitic tuff is of a whitish color composed of Ca-clinoptilolite and an amorphous phase (volcanic glass and amorphous SiO 2 ). The zeolitic tuff was analyzed by X-ray diffraction of the polycrystalline sample (XRPD), scanning electron microscopy and energy dispersive spectroscopy (SEM/EDS), and differential thermal and thermogravimetric (DTA/DTG) methods. According to the results obtained, it can be concluded that the studied zeolitic tuff is composed of Heu-type minerals. Based on the chemical analysis, thermal treatment and XRPD analysis it was determined that this is a mineral Ca-clinoptilolite. Thermal analysis in the temperature range from 300 up to 700°C showed that the examined zeolite minerals from the Novaković deposit are stable up to the temperature of 600°C. The crystal structure of Ca-clinoptilolite has been refined in the centrosymmetric space group C2/m (S.G. 12) with disordered distribution of Al and Si in the tetrahedral framework. The unit-cell parameters are as follows: a = 17.662 Å, b = 17.874 Å, c = 7.402 Å, β = 116.32° and V = 2122.73 Å 3 . The basic structural motif is represented by four channels. Three channels are composed of eight-membered rings, and one of ten-membered rings. The ten-membered (channel A) and one eight-membered channel (B) are parallel to the crystallographic axis c, and the other eight-membered channel is parallel to the a-axis. Ca-clinoptilolite comprises approximately 90 % of the studied zeolite tuff while the rest 10 % is the amorphous phase. The overall cation exchange capacity (CEC) amounts to 187 mmolM + / 100 g, and calcium represents the most abundant cation in the studied sample. The atomic ratios of Si/Al, Na + /(Na + +K + ), and Ca 2+ /(Ca 2+ +Mg 2+ ) are as follows: 4.36, 0.14, and 0.55, respectively. The zeolite tuff is both thermally and structurally stable and has applications in various areas of industry and agriculture. © 2018, Association of Chemists and Chemical Engineers of Serbia. All rights reserved.
PB  - Association of the Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Mineraloške i kristalografske osobine zeolitskog tufa heu-tipa lokaliteta novaković, Bosna i Hercegovina
SP  - 371
EP  - 382
VL  - 72
IS  - 6
DO  - 10.2298/HEMIND180725026R
UR  - https://hdl.handle.net/21.15107/rcub_dais_5250
ER  - 

@article{
author = "Radosavljević-Mihajlović, Ana S. and Daković, Aleksandra S. and Kašić, Vladan and Mitić, Vojislav V. and Stojanović, Jovica N. and Sokić, Miroslav D. and Marković, Branislav R.",
year = "2018",
abstract = "This paper presents mineralogical and crystallographic characterization of the zeolitic tuff from the Novakovic deposit, Republic of Bosnia and Herzegovina. The zeolitic tuff is of a whitish color composed of Ca-clinoptilolite and an amorphous phase (volcanic glass and amorphous SiO 2 ). The zeolitic tuff was analyzed by X-ray diffraction of the polycrystalline sample (XRPD), scanning electron microscopy and energy dispersive spectroscopy (SEM/EDS), and differential thermal and thermogravimetric (DTA/DTG) methods. According to the results obtained, it can be concluded that the studied zeolitic tuff is composed of Heu-type minerals. Based on the chemical analysis, thermal treatment and XRPD analysis it was determined that this is a mineral Ca-clinoptilolite. Thermal analysis in the temperature range from 300 up to 700°C showed that the examined zeolite minerals from the Novaković deposit are stable up to the temperature of 600°C. The crystal structure of Ca-clinoptilolite has been refined in the centrosymmetric space group C2/m (S.G. 12) with disordered distribution of Al and Si in the tetrahedral framework. The unit-cell parameters are as follows: a = 17.662 Å, b = 17.874 Å, c = 7.402 Å, β = 116.32° and V = 2122.73 Å 3 . The basic structural motif is represented by four channels. Three channels are composed of eight-membered rings, and one of ten-membered rings. The ten-membered (channel A) and one eight-membered channel (B) are parallel to the crystallographic axis c, and the other eight-membered channel is parallel to the a-axis. Ca-clinoptilolite comprises approximately 90 % of the studied zeolite tuff while the rest 10 % is the amorphous phase. The overall cation exchange capacity (CEC) amounts to 187 mmolM + / 100 g, and calcium represents the most abundant cation in the studied sample. The atomic ratios of Si/Al, Na + /(Na + +K + ), and Ca 2+ /(Ca 2+ +Mg 2+ ) are as follows: 4.36, 0.14, and 0.55, respectively. The zeolite tuff is both thermally and structurally stable and has applications in various areas of industry and agriculture. © 2018, Association of Chemists and Chemical Engineers of Serbia. All rights reserved.",
publisher = "Association of the Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Mineraloške i kristalografske osobine zeolitskog tufa heu-tipa lokaliteta novaković, Bosna i Hercegovina",
pages = "371-382",
volume = "72",
number = "6",
doi = "10.2298/HEMIND180725026R",
url = "https://hdl.handle.net/21.15107/rcub_dais_5250"
}

Radosavljević-Mihajlović, A. S., Daković, A. S., Kašić, V., Mitić, V. V., Stojanović, J. N., Sokić, M. D.,& Marković, B. R.. (2018). Mineraloške i kristalografske osobine zeolitskog tufa heu-tipa lokaliteta novaković, Bosna i Hercegovina. in Hemijska industrija
Association of the Chemical Engineers of Serbia., 72(6), 371-382.
https://doi.org/10.2298/HEMIND180725026R
https://hdl.handle.net/21.15107/rcub_dais_5250

Radosavljević-Mihajlović AS, Daković AS, Kašić V, Mitić VV, Stojanović JN, Sokić MD, Marković BR. Mineraloške i kristalografske osobine zeolitskog tufa heu-tipa lokaliteta novaković, Bosna i Hercegovina. in Hemijska industrija. 2018;72(6):371-382.
doi:10.2298/HEMIND180725026R
https://hdl.handle.net/21.15107/rcub_dais_5250 .

Radosavljević-Mihajlović, Ana S., Daković, Aleksandra S., Kašić, Vladan, Mitić, Vojislav V., Stojanović, Jovica N., Sokić, Miroslav D., Marković, Branislav R., "Mineraloške i kristalografske osobine zeolitskog tufa heu-tipa lokaliteta novaković, Bosna i Hercegovina" in Hemijska industrija, 72, no. 6 (2018):371-382,
https://doi.org/10.2298/HEMIND180725026R .,
https://hdl.handle.net/21.15107/rcub_dais_5250 .