Ettringite: Difference between revisions
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{{Infobox_Salt | {{Infobox_Salt | ||
|Footnote = | |Footnote = <ref>http://webmineral.com/data/Ettringite.shtml viewed on 29/07/2010</ref><ref> | ||
|photo = | http://www.mindat.org/min-1414.html viewed on 29/07/2010</ref> | ||
|mineralogical_Name = | |photo = <!-- [[Image:"file name"|300px]]--> | ||
|chemical_Name = | |mineralogical_Name = Ettringite | ||
|chemical_Name = Calcium aluminium sulphate hydrate | |||
|Trivial_Name = | |Trivial_Name = | ||
|chemical_Formula = | |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 | ||
|Hydratforms = | |Hydratforms = | ||
|Crystal_Class = | |Crystal_Class = hexagonal | ||
|Crystal_Structure = | |Crystal_Structure = | ||
|Deliqueszenzhumidity = | |Deliqueszenzhumidity = | ||
|Solubility = | |Solubility = | ||
|Density = | |Density = 1,8 g/cm<sup>3</sup> | ||
|MolVolume = | |MolVolume = | ||
|Molweight = | |Molweight = 1255,11 g/mol | ||
|Transparency = | |Transparency = | ||
|Cleavage = | |Cleavage = | ||
|Crystal_Habit = | |Crystal_Habit = | ||
|Twinning = | |Twinning = | ||
|Refractive_Indices = | |Refractive_Indices = n<sub>o</sub> = 1,491<br>n<sub>e</sub> = 1,470 | ||
|Birefringence = | |Birefringence = Δ = 0,021 | ||
|optical_Orientation = | |optical_Orientation = negative | ||
|Pleochroism = | |Pleochroism = | ||
|Dispersion = | |Dispersion = | ||
Revision as of 20:07, 3 June 2011
| Ettringite[1][2] | |
| Mineralogical name | Ettringite |
| Chemical name | Calcium aluminium sulphate hydrate |
| Trivial name | |
| Chemical formula | Ca6Al2(SO4)3(OH)12•26H2O |
| Other forms | |
| Crystal system | {{{Crystal_System}}} |
| 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 | |
| Cleavage | |
| Crystal habit | |
| Twinning | |
| Phase transition | |
| Chemical behavior | |
| Comments | |
| Crystal Optics | |
| Refractive Indices | no = 1,491 ne = 1,470 |
| Birefringence | Δ = 0,021 |
| Optical Orientation | negative |
| Pleochroism | |
| Dispersion | |
| Used Literature | |
| {{{Literature}}} | |
back to Sulphate
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