General Information:
Chemical Formula:
(Na,Ca,K)8Al6Si6O24(SO4)2Cl·(H2O)
IMA Status:
Approved IMA
Physical Properties:
Cleavage:
[???] Good
Color:
bottle green or yellow green.
Density:
2.557
Diaphaniety:
Transparent
Hardness:
5-5.5 - Apatite-Knife Blade
Luster:
Vitreous (Glassy)
Streak:
white
More details...