Hexahydrite: Difference between revisions

Revision as of 08:37, 10 June 2011

Hexahydrite^[1]^[2]

Mineralogical name	Hexahydrite, Magnesiumsulphate
Chemical name	Magnesiumsulphate 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
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
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}}}

@@ Line 7: / Line 7: @@
 |chemical_Formula     =MgSO<sub>4</sub>•6H<sub>2</sub>O
 |Hydratforms          =[[Kieserite]] (MgSO<sub>4</sub>•H<sub>2</sub>O)<br>[[Sanderite]] (MgSO<sub>4</sub>•2H<sub>2</sub>O)<br> [[Starkeyite]] (MgSO<sub>4</sub>•4H<sub>2</sub>O)<br> [[Pentahydrite]] (MgSO<sub>4</sub>•5H<sub>2</sub>O)<br> [[Epsomite]] (MgSO<sub>4</sub>•7H<sub>2</sub>O)<br> [[Meridianite]] (MgSO<sub>4</sub>•11H<sub>2</sub>O)<br> [[Magnesium 12-Hydrate]]
-|Crystal_Class        =monoclinic
+|Crystal_System       = monoclinic
 |Crystal_Structure    =
 |Deliqueszenzhumidity =