Bassanite: Difference between revisions
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|Crystal_Structure = | |Crystal_Structure = | ||
|Deliqueszenzhumidity = | |Deliqueszenzhumidity = | ||
|Solubility = | |Solubility = 3,0 g/l | ||
|Density =2,7 g/cm<sup>3</sup> | |Density =2,7 g/cm<sup>3</sup> | ||
|MolVolume =55,04 cm<sup>3</sup>/mol | |MolVolume =55,04 cm<sup>3</sup>/mol | ||
|Molweight =145,15 g/mol | |Molweight =145,15 g/mol | ||
|Transparency = | |Transparency = transparent to translucent | ||
|Cleavage = | |Cleavage = | ||
|Crystal_Habit = | |Crystal_Habit = | ||
Revision as of 09:20, 7 July 2011
| Bassanite[1][2] | |
| Mineralogical name | Bassanite |
| Chemical name | Calciumsulphate hemihydrate |
| Trivial name | |
| Chemical formula | CaSO4•0,5H2O |
| Other forms | |
| Crystal system | monoclinic |
| Crystal structure | |
| Deliquescence humidity 20°C | |
| Solubility (g/l) at 20°C | 3,0 g/l |
| Density (g/cm³) | 2,7 g/cm3 |
| Molar volume | 55,04 cm3/mol |
| Molar weight | 145,15 g/mol |
| Transparency | transparent to translucent |
| Cleavage | |
| Crystal habit | |
| Twinning | |
| Phase transition | |
| Chemical behavior | hardly soluble in water |
| Comments | |
| Crystal Optics | |
| Refractive Indices | no = 1,558 ne = 1,586 |
| Birefringence | Δ = 0,028 |
| Optical Orientation | positive |
| Pleochroism | |
| Dispersion | |
| Used Literature | |
| {{{Literature}}} | |
back to Sulphate
Weblinks[edit]
- ↑ http://webmineral.com/data/Bassanite.shtml seen on 29.07.2010
- ↑ http://www.mindat.org/min-557.html seen on 29.07.2010