General Information:
Chemical Formula:
(K,Na)3Na(SO4)2
Composition:
(Molecular Weight = 320.33 gm)
Potassium 27.46 % K
Sodium 12.56 % Na
Sulfur 20.02 % S
Oxygen 39.96 % O
Empirical Formula:
K2.25Na1.75(SO4)2
Physical Properties:
Cleavage:
[1011] Good
Color:
blue, colorless, green, gray, or gray blue.
Density:
2.7
Diaphaniety:
Transparent to Opaque
Habits:
Massive - Uniformly indistinguishable crystals forming large masses., Encrustations - Forms crust-like aggregates on matrix.,
Hardness:
3 - Calcite
Luminescence:
Non-fluorescent.
Luster:
Vitreous - Resinous
Streak:
white
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