General Information:
Chemical Formula:
K6Al4Si6BO20(OH)4Cl
Composition:
(Molecular Weight = 945.31 gm)
Potassium 24.82 % K
Aluminum 11.42 % Al
Silicon 17.83 % Si
Boron 1.14 % B
Hydrogen 0.43 % H
Chlorine 3.75 % Cl
Oxygen 40.62 % O
Empirical Formula:
K6Al4Si6B(O)20(OH)4(Cl)
IMA Status:
Approved IMA 1980
Physical Properties:
Cleavage:
[001] Perfect, [101] Perfect, [100] Good
Color:
brownish pink or colorless.
Density:
2.5
Diaphaniety:
Transparent
Hardness:
6 - Orthoclase
Luster:
Vitreous - Pearly
Streak:
white
More details...