@ARTICLE{Kądziołka-Gaweł_Mariola_A_2022, author={Kądziołka-Gaweł, Mariola and Dulski, Mateusz and Czaja, Maria and Krzykawski, Tomasz and Szubka, Magdalena}, volume={vol. 72}, number={No 3}, journal={Acta Geologica Polonica}, pages={353–368}, howpublished={online}, year={2022}, publisher={Komitet Nauk Geologicznych PAN}, publisher={Wydział Geologii UW}, abstract={In this paper cation arrangement in two samples of aluminoceladonite, emerald‑green and dark-green were studied by Mössbauer, Raman and X-ray photoelectron spectroscopies. The X-ray photoelectron spectroscopy (XPS) spectra obtained in the region of the Si2p, Al2p, Fe2p, K2p, and O1s core levels provided information, for the first time highlighting a route to identify the position of Si, Al, K, and Fe cations in a structure of layered silicates. The XPS analysis showed the presence of Al in tetrahedral and octahedral coordination while the K2p line indicated the possibility of K+ substitution by other cations in interlayer sites. Mössbauer spectroscopy provided information about crystal chemistry with respect to the local electronic and geometric environment around the Fe atom and to distortions of the polyhedra. It turned out that iron was located mostly in the cis-octahedra position wherein about 75% of iron appeared in the form of Fe 3+. The most preferred cation combinations around Fe corresponded to 3Fe 3+ ions and MgFe 2+Fe 3+/2MgFe 3+. Raman spectroscopy illustrated aluminium substitution in silicon and iron positions wherein the concentration of the aluminium determined the degree of structural distortion within the layered system. These isomorphic substitutions implied a typical band arrangement in the hydroxyl region, which has not been observed in celadonites so far.}, type={Article}, title={A multi-analytical approach for the analysis of cation distribution in a aluminoceladonite structure}, URL={http://sd.czasopisma.pan.pl/Content/124370/PDF-MASTER/4_Kadzio%C5%82ka-Gawel.pdf}, doi={10.24425/agp.2022.140430}, keywords={Aluminoceladonite, Ions position characterization isomorphic substitutions, Fe‑bearing phyllosilicates, X-ray photoelectron spectroscopy (XPS), Mössbauer spectroscopy, Raman spectroscopy}, }