General Information:
Chemical Formula:
Na8Al6Si6O24Cl2
Composition:
(Molecular Weight = 933.76 gm)
Sodium 19.70 % Na
Aluminum 17.34 % Al
Silicon 18.05 % Si
Chlorine 3.80 % Cl
Oxygen 41.12 % O
Empirical Formula:
Na8Al6Si6O24Cl
Locality:
Miask in the Ilmen Mountains, Russia.
Name Origin:
Named from its chemical composition.
Physical Properties:
Cleavage:
[110] Poor
Color:
azure blue, white, pink, gray, or green.
Density:
2.29
Diaphaniety:
Transparent to translucent
Habits:
Massive - Granular - Common texture observed in granite and other igneous rock., Disseminated - Occurs in small, distinct particles dispersed in matrix.,
Hardness:
6 - Orthoclase
Luminescence:
None.
Luster:
Vitreous - Greasy
Streak:
white
More details...