General Information:
Chemical Formula:
(Pb,Tl)2As5S9
Locality:
Binnental, Valais, Switzerland.
Physical Properties:
Cleavage:
[100] Good
Color:
cherry red, pink, or black.
Density:
4.6
Diaphaniety:
Subtranslucent to opaque
Habits:
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., ,
Hardness:
1.5-2 - Talc-Gypsum
Luster:
Sub Metallic
Streak:
red
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