Rebulite

General Information:
 Chemical Formula:
Tl5Sb5As8S22
 Composition:
(Molecular Weight = 2,935.49 gm)
Thallium 34.81 % Tl
Antimony 20.74 % Sb
Arsenic 20.42 % As
Sulfur 24.03 % S 
 Empirical Formula:
Tl5Sb5As8S22
Physical Properties:
 Color:
dark gray.
 Density:
4.81
 Luster:
Metallic
 Streak:
brown red
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