General Information:
Chemical Formula:Pb2Ag3Sb3S8
Composition:(Molecular Weight = 1,359.78 gm)Silver 23.80 %
AgAntimony 26.86 %
SbLead 30.48 %
PbSulfur 18.87 %
S Empirical Formula: Pb2Ag3Sb3S8
Name Origin:From the Greek diaphora, "difference."
Physical Properties: Cleavage:None
Color:gray or steel gray.
Density:6 - 6.2, Average = 6.1
Diaphaniety:Opaque
Habits:Euhedral Crystals - Occurs as well-formed crystals showing good external form., Granular - Generally occurs as anhedral to subhedral crystals in matrix., Striated - Parallel lines on crystal surface or cleavage face.
Hardness:2.5 - Finger Nail
Luminescence:Non-fluorescent.
Luster:Metallic
Streak:steel gray
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