Kieserite

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Kieserite[1][2]
HJS MgSO4 092503-3.jpg
Mineralogical name Kieserite
Chemical name Magnesiumsulfate Monohydrate
Trivial name
Chemical formula Mg[SO4] • H2O
Other forms Sanderite (MgSO4•2H2O)
Starkeyite (MgSO4•4H2O)
Pentahydrite (MgSO4•5H2O)
Hexahydrite (MgSO4•6H2O)
Epsomite (MgSO4•7H2O)
Meridianite (MgSO4•11 H2O)
Magnesium 12-Hydrate
Crystal system monoclinic
Crystal structure monoclinic prismatic
Deliquescence humidity 20°C
Solubility (g/l) at 20°C 684 g/l (100°C)
Density (g/cm³) 2.57 g/cm3
Molar volume 53.85 cm3/mol
Molar weight 138.9 g/mol
Transparency translucent
Cleavage perfect
Crystal habit
Twinning
Phase transition
Chemical behavior
Comments can be produced from an aqueous solution over 67°C
Crystal Optics
Refractive Indices nx = 1.523-1.520
ny = 1.535-1.533
nz = 1.586-1.584
Birefringence Δ = 0.063-0.064
Optical Orientation biaxial positive
Pleochroism
Dispersion 55°
Used Literature
{{{Literature}}}


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