Hexahydrite: Difference between revisions

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{{Infobox_Salt
{{Infobox_Salt
|Footnote            =
|Footnote            =<ref>http://webmineral.com/data/Hexahydrite.shtml</ref><ref>http://www.mindat.org/min-1891.html</ref>
|photo                = [[Image:"file name"|300px]]
|photo                =<!-- [[Image:"file name"|300px]]-->
|mineralogical_Name  =
|mineralogical_Name  =Hexahydrite, Magnesiumsulphate
|chemical_Name        =
|chemical_Name        =Magnesiumsulphate Hexahydrite
|Trivial_Name        =
|Trivial_Name        =
|chemical_Formula     =
|chemical_Formula     =MgSO<sub>4</sub>•6H<sub>2</sub>O
|Hydratforms          =
|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        =
|Crystal_Class        =monoclinic
|Crystal_Structure    =
|Crystal_Structure    =
|Deliqueszenzhumidity =
|Deliqueszenzhumidity =
|Solubility          =
|Solubility          =
|Density              =
|Density              = 1,76 g/cm<sup>3</sup>
|MolVolume            =
|MolVolume            = 132,6 cm<sup>3</sup>/mol
|Molweight            =
|Molweight            = 228,46 g/mol
|Transparency        =
|Transparency        =
|Cleavage            =
|Cleavage            =
|Crystal_Habit        =
|Crystal_Habit        =
|Twinning            =
|Twinning            =
|Refractive_Indices  =
|Refractive_Indices  = α = 1,426<br>β = 1,453<br>γ = 1,456
|Birefringence        =
|Birefringence        = Δ = 0,030
|optical_Orientation  =
|optical_Orientation  = biaxial negative
|Pleochroism          =
|Pleochroism          =
|Dispersion          =
|Dispersion          = 38°
|Phase_Transition    =
|Phase_Transition    =
|chemBehavior        =
|chemBehavior        =

Revision as of 18:52, 3 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 {{{Crystal_System}}}
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
Cleavage
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}}}


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