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Wittichenite

Year of discovery: 1853 (Wittichen, Germany), 1938 (Japan)

Locality list: 49 localities of wittichenite

• Cu₃BiS₃
• (Cu,Ag)₃BiS₃
• [Cu⁺₃][Bi³⁺][S₃]^6-

• Class: Cu sulfosalts < Sulfosalt class
• Class: Sulfosalt

• Bi => Sb: Skinnerite

• Color: Dark gray, Yellowish brown, Silver white
• Streak: Black
• Luster: Metallic
• Diaphaneity: Opaque

• Habit: Prismatic elongated to [001]

• Cleavage: No
• Hardness: 2-3
• Density: 6.5

• System: Orthorhombic
• Group: 222, P2₁2₁2₁
• Lattice: a=7.7, b=10.4, c=6.7

Etymology: Wittichen district in Germany, the address of Neuglück (Neugluck) mine where this mineral was discovered for the first time.