General Information:
Chemical Formula:
Na2AlSi3O8(OH)
Composition:
(Molecular Weight = 302.22 gm)
Sodium 15.21 % Na
Aluminum 8.93 % Al
Silicon 27.88 % Si
Hydrogen 0.33 % H
Oxygen 47.65 % O
Empirical Formula:
Na2AlSi3O8(OH)
Environment:
Pegmatites.
Locality:
Kangerdluarusuk, Greenland.
Physical Properties:
Cleavage:
[???] Good, [???] Good, [???] Good
Color:
white, light violet red, dark violet red, pink, or reddish violet.
Density:
2.46 - 2.5, Average = 2.48
Diaphaniety:
Transparent
Habits:
Massive - Uniformly indistinguishable crystals forming large masses., ,
Hardness:
6.5 - Pyrite
Luster:
Vitreous (Glassy)
Streak:
white
More details...