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EnglishThe crystal structures of potassium-exchanged forms of catapleiite and hilairite of the compositions (K0.49Ca0.42Na0.26) ZrSi3O9 · 2[(H2O)0.8(H3O)0.2] and K0.51ZrSi3O9 · [(H2O)0.5K0.27(H3O)0.23], respectively, were studied by X-ray diffraction and IR spectroscopy. Both structures retain the heteropolyhedral frameworks of the parent minerals formed by Zr octahedra and Si tetrahedra. The K cations occupy different positions in these minerals. In K-exchanged catapleiite, K cations are located only in the position occupied by Na in the structure of the parent mineral. In the K-exchanged form of hilairite, K cations are not only involved in the Na position but also partially occupy the H2O position.
| Autori interni: | |
| Autori: | ZUBKOVA NV; PEKOV IV; TURCHKOVA AG; PUSHCHAROVSKY DY; MERLINO S; PASERO M; CHUKANOV NV |
| Titolo: | Crystal structures of potassium-exchanged forms of catapleite and hilairite |
| Anno del prodotto: | 2007 |
| Digital Object Identifier (DOI): | 10.1134/S1063774507010075 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
http://hdl.handle.net/11568/203559
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