Schönite: Difference between revisions

From Saltwiki
Jump to navigation Jump to search
No edit summary
No edit summary
 
(11 intermediate revisions by 4 users not shown)
Line 1: Line 1:
{{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</ref>
|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  = Schönite, Pikromerite
|mineralogical_Name  = Schoenite, Picromerite
|chemical_Name        =
|chemical_Name        =Potassium magnesium sulfate hexahydrate
|Trivial_Name        =
|Trivial_Name        =
|chemical_Formula      = K<sub>2</sub>Mg(SO<sub>4</sub>)<sub>2</sub>•6H<sub>2</sub>O
|chemical_Formula      = K<sub>2</sub>Mg(SO<sub>4</sub>)<sub>2</sub>•6H<sub>2</sub>O
|Hydratforms          =
|Hydratforms          =
|Crystal_Class        = monoclinic
|Crystal_System      = monoclinic
|Crystal_Structure    =
|Crystal_Structure    =
|Deliqueszenzhumidity =
|Deliqueszenzhumidity =
|Solubility          =
|Solubility          = 250 g/l
|Density              = 2,03 g/cm<sup>3</sup>
|Density              = 2.03 g/cm<sup>3</sup>
|MolVolume            = 198,4 cm<sup>3</sup>/mol
|MolVolume            = 198.4 cm<sup>3</sup>/mol
|Molweight            =
|Molweight            = 402.72 g/mol
|Transparency        =
|Transparency        = transparent
|Cleavage            =
|Cleavage            = perfect
|Crystal_Habit        =
|Crystal_Habit        =
|Twinning            =
|Twinning            =
|Refractive_Indices  = n<sub>x</sub> = 1,461<br> n<sub>y</sub> = 1,463<br> n<sub>z</sub> = 1,476
|Refractive_Indices  = n<sub>x</sub> = 1.4607<br> n<sub>y</sub> = 1.4629<br> n<sub>z</sub> = 1.4755
|Birefringence        = Δ = 0,015
|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"/>
}}
}}


back to [[Sulphate]]
back to [[Sulfate]]


==Weblinks==
==Weblinks==
<references/>
<references/>


[[Category:Schönite]][[Category:Sulphate]][[Category:Salt]][[Category:InProgress]]
== 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)
Link to Google Scholar
[Dana:1951]Title: Dana's System of Mineralogy
Author: Dana J.D.
Link to Google Scholar


back to Sulfate

Weblinks[edit]

Literature[edit]

[Dana:1951]Dana E.S. (eds.) Dana J.D. (1951): Dana's System of Mineralogy, 7, Wiley & SonsLink to Google Scholar
[JCPDS:1991] (1991): JCPDS Powder Diffraction File 2 (PDF-2).Link to Google Scholar