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| Title: | Observations on growth of NaCl crystals out of the surface of sodalite [Na8(Al6Si6O24)Cl2] |
| Authors: | Hassib, Adil M.
Annersten, Hans |
| Keywords: | Sodalite
Nacl
Si-AI gel
Photochromic
Cathodochromic |
| Issue Date: | 1994 |
| Publisher: | International Union of Crystallography |
| Citation: | Journal of Applied Crystallography: 27(5); 710-715 |
| Abstract: | When the surface of sodalite [Nas(Si6AI606)CI2] crystals was treated with an etching solution, growth of NaCI crystals could be observed. The etchant used is a dilute nitric acid solution. The acid attacks the surface and breaks it down into an Si-AI gel in which the crystals grow rapidly. Optical photography and electron-microprobe images show crystals with steplike patterns and hollow depressions at the centres of crystal faces. Preferential growth and aggregation of crystallites at grain boundaries is distinctly observed. |
| URI: | http://dx.doi.org/10.1107/S0021889894001172 |
| ISSN: | 0021-8898 |
| Appears in Collections: | College of Science
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