Aphthitalite: Difference between revisions

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==Weblinks==
==Weblinks==

Revision as of 14:47, 20 December 2011

Aphthitalite[1][2]
Aphthitalit-19082010-klein.jpg
Mineralogical name Aphthitalite
Chemical name Potassium sodium sulphate
Trivial name Glaserite, Vesuvian Salt
Chemical formula K3Na(SO4)2
Na2SO4•3K2SO4
Other forms
Crystal system trigonal
Crystal structure
Deliquescence humidity 20°C
Solubility (g/l) at 20°C
Density (g/cm³) 2.7 g/cm3
Molar volume 246.2 cm3/mol
Molar weight 332 g/mol
Transparency transparent to opaque
Cleavage imperfect to fair
Crystal habit
Twinning
Phase transition
Chemical behavior
Comments
Crystal Optics
Refractive Indices no = 1.487-1.491
ne = 1.492-1.499
Birefringence Δ = 0.005-0.008
Optical Orientation positive
Pleochroism
Dispersion
Used Literature
{{{Literature}}}


back to Sulfate

Weblinks[edit]