General Information:
Chemical Formula:
Sb2O3·WO3
Composition:
(Molecular Weight = 523.35 gm)
Antimony 46.53 % Sb
Tungsten 35.13 % W
Oxygen 18.34 % O
Empirical Formula:
Sb2WO6
Environment:
Alteration product of tungsten and antimony ores.
IMA Status:
Approved IMA
Locality:
The Clara Mine, near Oberwolfach, central Black Forest, Germany.
Name Origin:
Named after its chemical composition of tungsten (W) and antimony (Sb). Swedish, tung sten = "heavy stone" and Latin, "stibium."
Physical Properties:
Cleavage:
[001] Perfect
Color:
green or dark green.
Density:
6.69
Diaphaniety:
Translucent to opaque
Habits:
Globular - Spherical, or nearly so, rounded forms (e.g. wavellite)., ,
Hardness:
2 - Gypsum
Luminescence:
Non-fluorescent.
Luster:
Earthy (Dull)
Streak:
greenish white
More details...