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Wittichenite

Type Locality
Wittichen, Schenkenzell, Black Forest, Baden-Württemberg, Germany
Mineral Data
Cu3BiS3
Strunz: 
2.GA.20
Physical Properties
Crystal System: 
Orthorhombic Prismatic crystals or masses
Streak: 
Black
Hardness: 
2.0 - 3.0
Tenacity: 
brittle