General Information:
Chemical Formula:
(Al,Fe+++)2(SO4)3
Composition:
(Molecular Weight = 356.59 gm)
Aluminum 11.35 % Al
Iron 7.83 % Fe
Sulfur 26.98 % S
Oxygen 53.84 % O
Empirical Formula:
Al1.5Fe3+0.5(SO4)3
Physical Properties:
Color:
red, clear red, or brick red.
Density:
2.86
Hardness:
1.5 - Between Talc and Gypsum
Streak:
red
More details...