Astrakanite: Difference between revisions

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{{Infobox_Salt
{{Infobox_Salt
|Footnote            = <ref>http://www.mindat.org/min-695.html viewed on 29/07/2010</ref>
|Footnote            = <ref>http://www.mindat.org/min-695.html viewed on 29/07/2010</ref> <ref><bib id="JCPDS:1991"></ref>
|photo                =  [[File:CH GR Berguen EvKirche 0098 01 6 Bb 440um IMG 3337.JPG|300px]]
|photo                =  [[File:CH GR Berguen EvKirche 0098 01 6 Bb 440um IMG 3337.JPG|300px]]
|mineralogical_Name  = Astrakanite, Bloedite
|mineralogical_Name  = Astrakanite, Bloedite
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back to [[Sulfate]]
back to [[Sulfate]]


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


[[Category:Astrakanite]][[Category:Sulphate]][[Category:Salt]][[Category:editing]][[Category:Sulfate]]
[[Category:Astrakanite]][[Category:Sulphate]][[Category:Salt]][[Category:editing]][[Category:Sulfate]]

Revision as of 13:11, 6 February 2015

Astrakanite[1] [2]
CH GR Berguen EvKirche 0098 01 6 Bb 440um IMG 3337.JPG
Mineralogical name Astrakanite, Bloedite
Chemical name Sodium magnesium sulfate
Trivial name
Chemical formula Na2Mg(SO4)2•4H2O
Other forms
Crystal system monoclinic
Crystal structure
Deliquescence humidity 20°C
Solubility (g/l) at 20°C
Density (g/cm³) 2.23 g/cm3
Molar volume 150.0 cm3/mol
Molar weight 334.48 g/mol
Transparency transparent
Cleavage none observed
Crystal habit
Twinning
Phase transition
Chemical behavior
Comments
Crystal Optics
Refractive Indices nx = 1.483-1.486
ny = 1.486-1.488
nz = 1.487-1.489
Birefringence Δ = 0.004-0.003
Optical Orientation biaxial negative
Pleochroism
Dispersion
Used Literature
{{{Literature}}}


back to Sulfate

References[edit]

  1. http://www.mindat.org/min-695.html viewed on 29/07/2010
  2. <bib id="JCPDS:1991">