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 | |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 | |Density = 1.8 g/cm<sup>3</sup> | ||
|MolVolume = | |MolVolume = | ||
|Molweight = 1255 | |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 | |Refractive_Indices = n<sub>o</sub> = 1.491<br>n<sub>e</sub> = 1.470 | ||
|Birefringence = Δ = 0 | |Birefringence = Δ = 0.021 | ||
|optical_Orientation = negative | |optical_Orientation = negative | ||
|Pleochroism = | |Pleochroism = | ||
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}} | }} | ||
back to [[ | 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]
- ↑ http://webmineral.com/data/Ettringite.shtml viewed on 29/07/2010
- ↑ http://www.mindat.org/min-1414.html viewed on 29/07/2010