General Information:
Chemical Formula:
Pb2Ag3Sb3S8
Composition:
(Molecular Weight = 1,359.78 gm)
Silver 23.80 % Ag
Antimony 26.86 % Sb
Lead 30.48 % Pb
Sulfur 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
More details...