Ettringite: Difference between revisions

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|photo                = <!-- [[Image:"file name"|300px]]-->
|photo                = <!-- [[Image:"file name"|300px]]-->
|mineralogical_Name  = Ettringite
|mineralogical_Name  = Ettringite
|chemical_Name        = Calcium aluminium sulphate hydrate
|chemical_Name        = Calcium aluminium sulfate hydrate
|Trivial_Name        =
|Trivial_Name        =
|chemical_Formula      = Ca<sub>6</sub>Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>(OH)<sub>12</sub>•26H<sub>2</sub>O
|chemical_Formula      = Ca<sub>6</sub>Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>(OH)<sub>12</sub>•26H<sub>2</sub>O
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|Deliqueszenzhumidity =
|Deliqueszenzhumidity =
|Solubility          =
|Solubility          =
|Density              = 1,8 g/cm<sup>3</sup>
|Density              = 1.8 g/cm<sup>3</sup>
|MolVolume            =
|MolVolume            =
|Molweight            = 1255,11 g/mol
|Molweight            = 1255.11 g/mol
|Transparency        = transparent
|Transparency        = transparent
|Cleavage            = perfect
|Cleavage            = perfect
|Crystal_Habit        =
|Crystal_Habit        =
|Twinning            =
|Twinning            =
|Refractive_Indices  = n<sub>o</sub> = 1,491<br>n<sub>e</sub> = 1,470
|Refractive_Indices  = n<sub>o</sub> = 1.491<br>n<sub>e</sub> = 1.470
|Birefringence        = Δ = 0,021
|Birefringence        = Δ = 0.021
|optical_Orientation  = negative
|optical_Orientation  = negative
|Pleochroism          =
|Pleochroism          =
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}}
}}


back to [[Sulphate]]
back to [[Sulfate]]


==Weblinks==
==Weblinks==
<references/>
<references/>


[[Category:Ettringite]][[Category:Sulphate]][[Category:Salt]][[Category:InProgress]]
[[Category:Ettringite]][[Category:Sulphate]][[Category:Salt]][[Category:InProgress]][[Category:Sulfate]]

Revision as of 15:23, 20 December 2011

Ettringite[1][2]
Mineralogical name Ettringite
Chemical name Calcium aluminium sulfate hydrate
Trivial name
Chemical formula Ca6Al2(SO4)3(OH)12•26H2O
Other forms
Crystal system hexagonal
Crystal structure
Deliquescence humidity 20°C
Solubility (g/l) at 20°C
Density (g/cm³) 1.8 g/cm3
Molar volume
Molar weight 1255.11 g/mol
Transparency transparent
Cleavage perfect
Crystal habit
Twinning
Phase transition
Chemical behavior
Comments not soluble in water
Crystal Optics
Refractive Indices no = 1.491
ne = 1.470
Birefringence Δ = 0.021
Optical Orientation negative
Pleochroism
Dispersion
Used Literature
{{{Literature}}}


back to Sulfate

Weblinks[edit]