General Information:
Chemical Formula:
Bi4(SiO4)3
Composition:
(Molecular Weight = 1,112.17 gm)
Silicon 7.58 % Si
Bismuth 75.16 % Bi
Oxygen 17.26 % O
Empirical Formula:
Bi4(SiO4)3
Environment:
Found with native bisimuth.
Locality:
Saxony, near Schneeberg.
Physical Properties:
Cleavage:
[???] Indistinct
Color:
colorless, gray, yellow, yellow brown, or dark brown.
Density:
6.6
Diaphaniety:
Transparent to translucent
Habits:
Crystalline - Fine - Occurs as well-formed fine sized crystals., Spherical - Spherical, rounded aggregates.,
Hardness:
4.5 - Between Fluorite and Apatite
Luster:
Adamantine
Streak:
white
More details...