General Information:
Chemical Formula:
Pb7Sb8S19
Composition:
(Molecular Weight = 3,033.65 gm)
Antimony 32.11 % Sb
Lead 47.81 % Pb
Sulfur 20.08 % S
Empirical Formula:
Pb7Sb8S19
Locality:
Wolfsberg in the Hartz Mountains.
Name Origin:
From the Greek many - 'hetero' and form - 'morphos.'
Physical Properties:
Cleavage:
[112] Good
Color:
black.
Density:
5.73
Diaphaniety:
Opaque
Hardness:
2.5-3 - Finger Nail-Calcite
Luster:
Metallic
Streak:
black
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