
General Information:

Chemical Formula:
CaS5·CaS2O3·6Ca(OH)2·20(H2O)

Composition:
(Molecular Weight = 1,117.40 gm)
Calcium 25.11 %
CaHydrogen 4.69 %
H Sulfur 20.09 %
S Oxygen 50.11 %
O 
Empirical Formula:
Ca7S7O3(OH)12·20(H2O)

IMA Status:
Approved IMA 1985
Physical Properties:

Cleavage:
[???] Good

Color:
light yellow or orange.

Density:
1.83

Diaphaniety:
Transparent to Translucent

Hardness:
2 - Gypsum

Luster:
Vitreous - Pearly

Streak:
light yellow
More details...