Pentahydrite: Difference between revisions

Revision as of 21:47, 15 February 2015

Pentahydrite^[1]^[2]

Mineralogical name	Pentahydrite, Allenite
Chemical name	Magnesiumsulfate Pentahydrite
Trivial name
Chemical formula	MgSO₄•5H₂O
Other forms	Kieserite (MgSO₄•H₂O) Sanderite (MgSO₄•2H₂O) Starkeyite (MgSO₄•4H₂O) Hexahydrite (MgSO₄•6H₂O) Epsomite (MgSO₄•7H₂O) Meridianite (MgSO₄•11H₂O) Magnesium 12-Hydrate
Crystal system	triclinic
Crystal structure
Deliquescence humidity 20°C
Solubility (g/l) at 20°C
Density (g/cm³)	1.9 g/cm³
Molar volume
Molar weight	210.3 g/mol
Transparency
Cleavage
Crystal habit
Twinning
Phase transition
Chemical behavior
Comments	unstable in air
Crystal Optics
Refractive Indices	n_x = 1.482 n_y = 1.492 n_z = 1.493
Birefringence	Δ = 0.011
Optical Orientation	negative
Pleochroism
Dispersion	45.1°
Used Literature
[Dana:1951]Title: Dana's System of Mineralogy Author: Dana J.D.

Dana E.S. (eds.) Dana J.D. (1951): Dana's System of Mineralogy, 7, Wiley & Sons

@@ Line 1: / Line 1: @@
+back to [[Sulfate]]
 {{Infobox_Salt
 |Footnote             = <ref>http://webmineral.com/data/Pentahydrite.shtml  viewed on 29/07/2010</ref><ref>http://www.mindat.org/min-3153.html  viewed on 29/07/2010</ref>
@@ Line 26: / Line 29: @@
 |chemBehavior         =
 |Comments             = unstable in air
-|Literature =<bib id="Dana:1951"/>
+|Literature           =<bib id="Dana:1951"/>
 }}
-back to [[Sulfate]]
 ==Weblinks==
@@ Line 38: / Line 40: @@
 <biblist/>
-[[Category:Pentahydrite]][[Category:Sulphate]][[Category:Salt]][[Category:InProgress]][[Category:Sulfate]]
+[[Category:Pentahydrite]][[Category:Sulphate]][[Category:Salt]][[Category:InProgress]][[Category:Sulfate]][[Category:List]]