Bassanite: Difference between revisions

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{{Infobox_Salt
{{Infobox_Salt
|Footnote            =<ref>http://webmineral.com/data/Bassanite.shtml seen on 29.07.2010</ref><ref>http://www.mindat.org/min-557.html seen on 29.07.2010</ref>
|Footnote            =<ref>http://webmineral.com/data/Bassanite.shtml seen on 29.07.2010</ref><ref>http://www.mindat.org/min-557.html seen on 29.07.2010</ref>  
|photo                = <!-- [[Image:"file name"|300px]]-->
|photo                = <!-- [[Image:"file name"|300px]]-->
|mineralogical_Name  = Bassanite
|mineralogical_Name  = Bassanite
|chemical_Name        = Calciumsulphate hemihydrate
|chemical_Name        = Calciumsulfate hemihydrate
|Trivial_Name        =
|Trivial_Name        =
|chemical_Formula    =CaSO<sub>4</sub>•0,5H<sub>2</sub>O  
|chemical_Formula    =CaSO<sub>4</sub>•0.5H<sub>2</sub>O  
|Hydratforms          =
|Hydratforms          =
|Crystal_System      =monoclinic
|Crystal_System      =monoclinic
|Crystal_Structure    =
|Crystal_Structure    =
|Deliqueszenzhumidity =
|Deliqueszenzhumidity =
|Solubility          = 3,0 g/l
|Solubility          = 3.0 g/l
|Density              =2,7 g/cm<sup>3</sup>
|Density              =2.64 g/cm<sup>3</sup>
|MolVolume            =55,04 cm<sup>3</sup>/mol  
|MolVolume            =55.04 cm<sup>3</sup>/mol  
|Molweight            =145,15 g/mol  
|Molweight            =145.15 g/mol  
|Transparency        = transparent to translucent
|Transparency        = transparent to translucent
|Cleavage            =
|Cleavage            =
|Crystal_Habit        =
|Crystal_Habit        =
|Twinning            =
|Twinning            =
|Refractive_Indices  = n<sub>o</sub> = 1,558<br>n<sub>e</sub> = 1,586  
|Refractive_Indices  = n<sub>o</sub> = 1.558<br>n<sub>e</sub> = 1.586  
|Birefringence        =Δ = 0,028  
|Birefringence        =Δ = 0.028  
|optical_Orientation  =positive
|optical_Orientation  =positive
|Pleochroism          =
|Pleochroism          =
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|chemBehavior        =
|chemBehavior        =
|Comments            =hardly soluble in water
|Comments            =hardly soluble in water
|Literature = <bib id="Broul.etal:1981"/><bib id="Dana:1951"/>
}}
}}


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


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


[[Category:Bassanite]][[Category:Sulphate]][[Category:Salt]][[Category:InProgress]]
== Literature ==
 
<biblist/>
 
 
[[Category:Bassanite]][[Category:Sulphate]][[Category:Salt]][[Category:editing]][[Category:Sulfate]][[Category:List]]

Latest revision as of 16:50, 14 February 2015

Bassanite[1][2]
Mineralogical name Bassanite
Chemical name Calciumsulfate hemihydrate
Trivial name
Chemical formula CaSO4•0.5H2O
Other forms
Crystal system monoclinic
Crystal structure
Deliquescence humidity 20°C
Solubility (g/l) at 20°C 3.0 g/l
Density (g/cm³) 2.64 g/cm3
Molar volume 55.04 cm3/mol
Molar weight 145.15 g/mol
Transparency transparent to translucent
Cleavage
Crystal habit
Twinning
Phase transition
Chemical behavior
Comments hardly soluble in water
Crystal Optics
Refractive Indices no = 1.558
ne = 1.586
Birefringence Δ = 0.028
Optical Orientation positive
Pleochroism
Dispersion
Used Literature
[Broul.etal:1981]Title: Solubility in organic two component systems
Author: Broul M., Nyvlt J.; Soehnel O.
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]

[Broul.etal:1981]Elsevier (eds.) Broul M., Nyvlt J.; Soehnel O. (1981): Solubility in organic two component systems, ElsevierLink to Google Scholar
[Dana:1951]Dana E.S. (eds.) Dana J.D. (1951): Dana's System of Mineralogy, 7, Wiley & SonsLink to Google Scholar