General Information:
Chemical Formula:
(Na,Ca,K)Al3(SO4)2(OH)6
IMA Status:
Approved IMA
Physical Properties:
Color:
white.
Density:
2.8
Diaphaniety:
Transparent to Translucent
Hardness:
3-4 - Calcite-Fluorite
Luster:
Vitreous (Glassy)
Streak:
white
More details...