General Information:
Chemical Formula:PbAs2S4
Composition:(Molecular Weight = 485.31 gm)Arsenic 30.88 %
AsLead 42.69 %
PbSulfur 26.43 %
S Empirical Formula: PbAs2S4
Locality:Binnental, Valais, Switzerland.
Physical Properties: Cleavage:[100] Good
Color:dear lead gray.
Density:5.4
Diaphaniety:Opaque
Habits:Striated - Parallel lines on crystal surface or cleavage face., Acicular - Occurs as needle-like crystals.,
Hardness:3 - Calcite
Luster:Metallic
Streak:dark brown
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