General Information:
Chemical Formula:
K6Al4Si8O25·(H2O)
Composition:
(Molecular Weight = 985.20 gm)
Potassium 23.81 % K
Aluminum 10.95 % Al
Silicon 22.81 % Si
Hydrogen 0.20 % H
Oxygen 42.22 % O
Empirical Formula:
K6Al4Si8O25·(H2O)
Environment:
Ultra-agpaitic pegmatite cutting nepheline syenite in a drill core.
Locality:
Vuonemiok River, southern Khibiny massif, Kola Peninsula, Russia.
Name Origin:
Named from the Greek "lithos", stone, because it contains the most abundant components of the Earth's crust.
Physical Properties:
Cleavage:
None
Color:
colorless.
Density:
2.51
Diaphaniety:
Transparent
Habits:
Irregular Grains - Occurs as splotchy, anhedral crystals forming inclusions in other minerals or rocks., ,
Hardness:
5.5 - Knife Blade
Luster:
Vitreous (Glassy)
Streak:
white
More details...