General Information:
Chemical Formula:
Pb9Ca5Mn++Si9O33
Composition:
(Molecular Weight = 2,900.88 gm)
Calcium 6.91 % Ca
Manganese 1.89 % Mn
Silicon 8.71 % Si
Lead 64.28 % Pb
Oxygen 18.20 % O
Empirical Formula:
Pb9Ca5Mn2+Si9O33
Locality:
Vermland, Sweden.
Physical Properties:
Cleavage:
[???] Good
Color:
colorless, gray, or white.
Density:
5.74
Diaphaniety:
Translucent to transparent
Habits:
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., Massive - Granular - Common texture observed in granite and other igneous rock.,
Hardness:
3 - Calcite
Luster:
Vitreous - Adamantine
Streak:
white
More details...