Schönite: Difference between revisions
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|Deliqueszenzhumidity = | |Deliqueszenzhumidity = | ||
|Solubility = 250 g/l | |Solubility = 250 g/l | ||
|Density = 2 | |Density = 2.15 g/cm<sup>3</sup> | ||
|MolVolume = 198 | |MolVolume = 198.4 cm<sup>3</sup>/mol | ||
|Molweight = 402 | |Molweight = 402.73 g/mol | ||
|Transparency = transparent | |Transparency = transparent | ||
|Cleavage = perfect | |Cleavage = perfect | ||
|Crystal_Habit = | |Crystal_Habit = | ||
|Twinning = | |Twinning = | ||
|Refractive_Indices = n<sub>x</sub> = 1 | |Refractive_Indices = n<sub>x</sub> = 1.461<br> n<sub>y</sub> = 1.463<br> n<sub>z</sub> = 1.476 | ||
|Birefringence = Δ = 0 | |Birefringence = Δ = 0.015 | ||
|optical_Orientation = positive | |optical_Orientation = positive | ||
|Pleochroism = | |Pleochroism = | ||
| Line 28: | Line 28: | ||
}} | }} | ||
back to [[ | back to [[Sulfate]] | ||
==Weblinks== | ==Weblinks== | ||
<references/> | <references/> | ||
[[Category:Schönite]][[Category:Sulphate]][[Category:Salt]][[Category:InProgress]] | [[Category:Schönite]][[Category:Sulphate]][[Category:Salt]][[Category:InProgress]][[Category:Sulfate]] | ||
Revision as of 16:05, 20 December 2011
| Schönite[1][2] | |
| Mineralogical name | Schönite, Pikromerite |
| Chemical name | |
| Trivial name | |
| Chemical formula | K2Mg(SO4)2•6H2O |
| Other forms | |
| Crystal system | monoclinic |
| Crystal structure | |
| Deliquescence humidity 20°C | |
| Solubility (g/l) at 20°C | 250 g/l |
| Density (g/cm³) | 2.15 g/cm3 |
| Molar volume | 198.4 cm3/mol |
| Molar weight | 402.73 g/mol |
| Transparency | transparent |
| Cleavage | perfect |
| Crystal habit | |
| Twinning | |
| Phase transition | |
| Chemical behavior | |
| Comments | |
| Crystal Optics | |
| Refractive Indices | nx = 1.461 ny = 1.463 nz = 1.476 |
| Birefringence | Δ = 0.015 |
| Optical Orientation | positive |
| Pleochroism | |
| Dispersion | |
| Used Literature | |
| {{{Literature}}} | |
back to Sulfate
Weblinks[edit]
- ↑ http://webmineral.com/data/Picromerite.shtml viewed on 29/07/2010
- ↑ http://www.mindat.org/min-3206.html viewed on 29/07/2010