Starkeyite: Difference between revisions
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{{Infobox_Salt | {{Infobox_Salt | ||
|Footnote = | |Footnote = <ref>http://webmineral.com/data/Starkeyite.shtml viewed on 29/07/2010</ref><ref>http://www.mindat.org/min-3752.html viewed on 29/07/2010</ref> | ||
|photo = | |photo = <!-- [[Image:"file name"|300px]] --> | ||
|mineralogical_Name = | |mineralogical_Name = Starkeyite, Leonhardtite | ||
|chemical_Name = | |chemical_Name = Magnesiumsulphate Tetrahydrate | ||
|Trivial_Name = | |Trivial_Name = | ||
|chemical_Formula | |chemical_Formula = MgSO<sub>4</sub>•4H<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> [[Pentahydrite]] (MgSO<sub>4</sub>•5H<sub>2</sub>O)<br>[[Hexahydrite]] (MgSO<sub>4</sub>•6H<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 = | ||
|MolVolume = | |MolVolume = 95,87 cm<sup>3</sup>/mol | ||
|Molweight = | |Molweight = 192,3 g/mol | ||
|Transparency = | |Transparency = | ||
|Cleavage = | |Cleavage = | ||
|Crystal_Habit = | |Crystal_Habit = | ||
|Twinning = | |Twinning = | ||
|Refractive_Indices = | |Refractive_Indices = n<sub>x</sub> = 1,49<br> n<sub>y</sub> = 1,491<br> n<sub>z</sub> = 1,497 | ||
|Birefringence = | |Birefringence = Δ = 0,007 | ||
|optical_Orientation = | |optical_Orientation = positive | ||
|Pleochroism = | |Pleochroism = | ||
|Dispersion = | |Dispersion = | ||
|Phase_Transition = | |Phase_Transition = | ||
|chemBehavior = | |chemBehavior = | ||
|Comments = | |Comments = not stable in air | ||
}} | }} | ||
Revision as of 19:07, 3 June 2011
| Starkeyite[1][2] | |
| Mineralogical name | Starkeyite, Leonhardtite |
| Chemical name | Magnesiumsulphate Tetrahydrate |
| Trivial name | |
| Chemical formula | MgSO4•4H2O |
| Other forms | Kieserite (MgSO4•H2O) Sanderite (MgSO4•2H2O) Pentahydrite (MgSO4•5H2O) Hexahydrite (MgSO4•6H2O) 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) | |
| Molar volume | 95,87 cm3/mol |
| Molar weight | 192,3 g/mol |
| Transparency | |
| Cleavage | |
| Crystal habit | |
| Twinning | |
| Phase transition | |
| Chemical behavior | |
| Comments | not stable in air |
| Crystal Optics | |
| Refractive Indices | nx = 1,49 ny = 1,491 nz = 1,497 |
| Birefringence | Δ = 0,007 |
| Optical Orientation | positive |
| Pleochroism | |
| Dispersion | |
| Used Literature | |
| {{{Literature}}} | |
back to Sulphate
Weblinks[edit]
- ↑ http://webmineral.com/data/Starkeyite.shtml viewed on 29/07/2010
- ↑ http://www.mindat.org/min-3752.html viewed on 29/07/2010