Pentahydrite

From Saltwiki
Revision as of 22:30, 22 December 2013 by Hschwarz (talk | contribs)
Jump to navigation Jump to search
Pentahydrite[1][2]
Mineralogical name Pentahydrite, Allenite
Chemical name Magnesiumsulfate 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 triclinic
Crystal structure
Deliquescence humidity 20°C
Solubility (g/l) at 20°C
Density (g/cm³) 1.9 g/cm3
Molar volume
Molar weight 210.3 g/mol
Transparency
Cleavage
Crystal habit
Twinning
Phase transition
Chemical behavior
Comments unstable 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}}}


back to Sulfate

Weblinks[edit]