Pavlovski, Blagoj and Reka, Arianit and Boev, Blazo and Boev, Ivan and Makreski, Petre (2018) Chemical, spectra-structural and microscopy study of the natural tridymite from Republic of Macedonia. In: 25th Congress of Chemists and Technologists of Macedonia, 19–22 Sept 2018, Ohrid, R. Macedonia.
Preview |
Text
25Congress-Book of abstracts-final.pdf Download (2MB) | Preview |
Preview |
Text
POSTER SCTM 2018 final.pdf Download (812kB) | Preview |
Abstract
The naturally occurring tridymite collected from Kavadarci region, Republic of Macedonia represents a pretty loose, soft, weak rock with white to greyish color that resembles diatomaceous earth. The chemical composition of the samples was determined by classical silicate analysis and the results revealed presence of the following oxides (wt%): SiO2 (90.17), Al2O3 (1.79), Fe2O3 (0.328), MnO (0.0004), TiO2 (0.055), CaO (0.132), MgO (0.20), K2O (0.52), Na2O (0.25), and LOI (6.15). Results from the X-ray diffraction examination enabled to determine presence of predominant tridymite crystalline phase, associated with quartz and muscovite. The IR spectrum of the naturally occurring tridymite exhibits absorption bands at 791 cm-1 and 1100 cm-1 ascribed to the stretching Si– O–Si vibrations. The band at 3650 and 1640 cm-1 are assigned to the stretching and bending vibrations from the absorbed water, respectively. Characteristics hexagonal crystals of tridymite and globular forms present in the raw material were found from the SEM investigations
| Item Type: | Conference or Workshop Item (Poster) |
|---|---|
| Uncontrolled Keywords: | natural tridymite, XRPD, FTIR, SEM. |
| Subjects: | Natural sciences > Chemical sciences Natural sciences > Earth and related environmental sciences Engineering and Technology > Other engineering and technologies |
| Divisions: | Faculty of Natural and Technical Sciences |
| Depositing User: | Biljana Kosturanova |
| Date Deposited: | 08 Oct 2018 12:25 |
| Last Modified: | 08 Oct 2018 12:25 |
| URI: | https://eprints.ugd.edu.mk/id/eprint/20493 |
Actions (login required)
 |
View Item |