Pentahydrite

Pentahydrite
Mineralogical name
Chemical name	Pentahydrite
Trivial name
Chemical formula	MgSO4•5H2O
Other forms	Kieserite (MgSO4•H2O) Sanderite (MgSO4•2H2O) Starkeyite (MgSO4•4H2O) Hexahydrite (MgSO4•6H2O) Epsomite (MgSO4•7H2O) Meridianite (MgSO4•11H2O) Magnesium 12-Hydrate
Crystal system	{{{Crystal_System}}}
Crystal structure
Deliquescence humidity 20°C
Solubility (g/l) at 20°C
Density (g/cm³)	1,9 g/cm3
Molar volume
Molar weight
Transparency
Cleavage
Crystal habit
Twinning
Phase transition
Chemical behavior
Comments	not stable in air
Crystal Optics
Refractive Indices	nx = 1,482 ny = 1,492 nz = 1,493
Birefringence	Δ = 0,011
Optical Orientation	negative
Pleochroism
Dispersion
Used Literature
{{{Literature}}}

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A phase is a physically distinctive form of matter and is characterized by having relatively uniform chemical and physical properties.