Hexahydrite: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
m (Protected "Hexahydrite" ([edit=sysop] (indefinite) [move=sysop] (indefinite))) |
(No difference)
| |
Revision as of 15:31, 20 December 2011
| Hexahydrite[1][2] | |
| Mineralogical name | Hexahydrite, Magnesiumsulfate |
| Chemical name | Magnesiumsulfate Hexahydrite |
| Trivial name | |
| Chemical formula | MgSO4•6H2O |
| Other forms | Kieserite (MgSO4•H2O) Sanderite (MgSO4•2H2O) Starkeyite (MgSO4•4H2O) Pentahydrite (MgSO4•5H2O) Epsomite (MgSO4•7H2O) Meridianite (MgSO4•11H2O) Magnesium 12-Hydrate |
| Crystal system | monoclinic |
| Crystal structure | |
| Deliquescence humidity 20°C | |
| Solubility (g/l) at 20°C | 660 g/l |
| Density (g/cm³) | 1.76 g/cm3 |
| Molar volume | 132.6 cm3/mol |
| Molar weight | 228.46 g/mol |
| Transparency | transparent to opaque |
| Cleavage | perfect |
| Crystal habit | |
| Twinning | |
| Phase transition | |
| Chemical behavior | |
| Comments | can be produced from an aqueous solution at 48-69 °C |
| Crystal Optics | |
| Refractive Indices | α = 1.426 β = 1.453 γ = 1.456 |
| Birefringence | Δ = 0.030 |
| Optical Orientation | biaxial negative |
| Pleochroism | |
| Dispersion | 38° |
| Used Literature | |
| {{{Literature}}} | |
back to Sulfate