Schönite: Difference between revisions
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{{Infobox_Salt | {{Infobox_Salt | ||
|Footnote = <ref>http://webmineral.com/data/Picromerite.shtml viewed on 29/07/2010</ref><ref>http://www.mindat.org/min-3206.html viewed on 29/07/2010 | |Footnote = <ref>http://webmineral.com/data/Picromerite.shtml viewed on 29/07/2010</ref><ref>http://www.mindat.org/min-3206.html viewed on 29/07/2010</ref> | ||
|photo = <!-- [[Image:"file name"|300px]]--> | |photo = <!-- [[Image:"file name"|300px]]--> | ||
|mineralogical_Name = Schoenite, Picromerite | |mineralogical_Name = Schoenite, Picromerite | ||
| Line 18: | Line 18: | ||
|Crystal_Habit = | |Crystal_Habit = | ||
|Twinning = | |Twinning = | ||
|Refractive_Indices = n<sub>x</sub> = 1. | |Refractive_Indices = n<sub>x</sub> = 1.4607<br> n<sub>y</sub> = 1.4629<br> n<sub>z</sub> = 1.4755 | ||
|Birefringence = Δ = 0. | |Birefringence = Δ = 0.0148 | ||
|optical_Orientation = positive | |optical_Orientation = positive | ||
|Pleochroism = | |Pleochroism = | ||
|Dispersion = | |Dispersion =49.7° | ||
|Phase_Transition = | |Phase_Transition = | ||
|chemBehavior = | |chemBehavior = | ||
|Comments = | |Comments = | ||
|Literature = <bib id="JCPDS:1991"/> <bib id="Dana:1951"/> | |||
}} | }} | ||
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<references/> | <references/> | ||
[[Category:Schönite]][[Category:Sulphate]][[Category:Salt]][[Category:InProgress]][[Category:Sulfate]] | == Literature == | ||
<biblist /> | |||
[[Category:Schönite]][[Category:Sulphate]][[Category:Salt]][[Category:InProgress]][[Category:Sulfate]][[Category:List]] | |||
Latest revision as of 16:48, 14 February 2015
| Schönite[1][2] | |
| Mineralogical name | Schoenite, Picromerite |
| Chemical name | Potassium magnesium sulfate hexahydrate |
| 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) | 2.03 g/cm3 |
| Molar volume | 198.4 cm3/mol |
| Molar weight | 402.72 g/mol |
| Transparency | transparent |
| Cleavage | perfect |
| Crystal habit | |
| Twinning | |
| Phase transition | |
| Chemical behavior | |
| Comments | |
| Crystal Optics | |
| Refractive Indices | nx = 1.4607 ny = 1.4629 nz = 1.4755 |
| Birefringence | Δ = 0.0148 |
| Optical Orientation | positive |
| Pleochroism | |
| Dispersion | 49.7° |
| Used Literature | |
[JCPDS:1991]Title: JCPDS Powder Diffraction File 2 (PDF-2) [Dana:1951]Title: Dana's System of MineralogyAuthor: Dana J.D.
| |
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
Literature[edit]
| [Dana:1951] | Dana E.S. (eds.) Dana J.D. (1951): Dana's System of Mineralogy, 7, Wiley & Sons | |
| [JCPDS:1991] | (1991): JCPDS Powder Diffraction File 2 (PDF-2). | |