Examples of artificially grown crystals
chromium and potassium alum
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| Chromium potassium sulfate covered by aluminium potassium sulfate |
Crystal details |
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| Compound name | chromium and potassium alum |
| Formula | KCr(SO4)2*12H2O; KAl(SO4)2*12H2O |
| Dimensions | 18*13*12 mm |
| Mass | 1.8 g |
| Colour | purple (core), transparent (cover) |
| Keywords | inorg |
Growth conditions |
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| Technique | isothermal slow evaporation |
| Temperature | RT (298K) |
| Pressure | |
| Growth rate | |
| Solvent | |
| Doping procedure | |
| Keywords | sol |
Comments |
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| Application(s) | The crystal was grown for educational purposes in order to show the possibility of coating of one substance by another one, having isomorphic structure, in form of regular layer. |
| Link(s) | |
| Other remarks | The results of the work were shown at ECM28 in poster session. Ref.: Losev E. A., Rychkov D. A., Ivanenko A. I., Boldyreva E. V. The experience of teaching solid state chemistry in a secondary school. Example 1 – Isomorphism of alums. 28 European Crystallographic Meeting. Warwick, UK, August 25-129, 2013, P. s665 |
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