General Information:
Chemical Formula:
Fe++Fe+++2(SO4)4·22(H2O)
Composition:
(Molecular Weight = 948.13 gm)
Iron 17.67 % Fe
Hydrogen 4.68 % H
Sulfur 13.53 % S
Oxygen 64.12 % O
Empirical Formula:
Fe2+Fe3+2(SO4)4·22(H2O)
Locality:
Schwaz, near Bilin, Bohemia, Czech Republic.
Name Origin:
Named for the locality.
Physical Properties:
Color:
white or yellow.
Density:
1.87
Diaphaniety:
Transparent
Habits:
Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite), Fibrous - Crystals made up of fibers.,
Hardness:
2 - Gypsum
Luster:
Vitreous (Glassy)
Streak:
white
More details...