Saddlebackite

General Information:
 Chemical Formula:
Pb2Bi2Te2S3
 Composition:
(Molecular Weight = 1,183.76 gm)
Bismuth 35.31 % Bi
Tellurium 21.56 % Te
Lead 35.01 % Pb
Sulfur 8.13 % S 
 Empirical Formula:
Pb2Bi2Te2S3
 Environment:
In a lateritic orebody in a greenstone belt.
 IMA Status:
Approved IMA
 Locality:
Boddington, near Mount Saddleback approximately 100 km SE of Perth, Western Australia.
 Name Origin:
Named after its locality.
Physical Properties:
 Cleavage:
[001] Perfect
 Color:
gray or black.
 Diaphaniety:
Opaque
 Habits:
Lamellar - Thin laminae producing a lamellar structure., Aggregates - Made of numerous individual crystals or clusters.,
 Hardness:
2-2.5 - Gypsum-Finger Nail
 Luster:
Metallic
 Streak:
blackish gray
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