Gorgeyite
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| Gorgeyite[1][2] | |
| Mineralogical name | Gorgeyite, Görgeyite, Mikheevite |
| Chemical name | |
| Trivial name | |
| Chemical formula | K2Ca5(SO4)6•H2O |
| Other forms | |
| Crystal system | monoclinic |
| Crystal structure | |
| Deliquescence humidity 20°C | |
| Solubility (g/l) at 20°C | |
| Density (g/cm³) | 2.87 g/cm3 |
| Molar volume | 304 cm3/mol |
| Molar weight | 872.98 g/mol |
| Transparency | |
| Cleavage | |
| Crystal habit | |
| Twinning | |
| Phase transition | |
| Chemical behavior | |
| Comments | |
| Crystal Optics | |
| Refractive Indices | nx= 1.560 ny = 1.569 nz = 1.584 |
| Birefringence | Δ = 0.024 |
| Optical Orientation | positive |
| Pleochroism | |
| Dispersion | 79° |
| Used Literature | |
| [Steiger.etal:2000]Title: Data compliation and experimantal determinations Author: Steiger, Michael; Beyer, Roland; Dorn, Joachim; Zeunert, Anke  [Dana:1951]Title: Dana's System of MineralogyAuthor: Dana J.D.
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Weblinks[edit]
- ↑ http://webmineral.com/data/Gorgeyite.shtml viewed on 29/07/2010
- ↑ http://www.mindat.org/min-1748.html viewed on 29/07/2010
Literature[edit]
| [Dana:1951] | Dana E.S. (eds.) Dana J.D. (1951): Dana's System of Mineralogy, 7, Wiley & Sons | |
| [Steiger.etal:2000] | Steiger, Michael; Beyer, Roland; Dorn, Joachim; Zeunert, Anke (2000): Data compliation and experimantal determinations. In: Price, Clifford A. (eds.): An Expert Chemical Model for Determining the Environmental Conditions Needed to Prevent Salt Damage in Porous Materials, Archetype Publications Ltd, 19-44. | |