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Seligmannite

Year of discovery: 1901 (Lengenbach querry, Switzerland, 2021 (Japan)

Locality list: A locality of seligmannite

• PbCuAsS₃
• [Pb²⁺][Cu²⁺][As³⁺][S₃]

• Class: Bournonite group < Ternary sulfosalts < Sulfosalt class
• Class: Sulfosalt

• Cu => Ag: Marrite

• As => Sb: Bournonite (Series)
• As => Bi: Aikinite

• Color: Dark gray
• Streak: Black
• Luster: Metallic
• Diaphaneity: Opaque

• Cleavage: Indistinct on {001}, {100} and {010} (3 planes)
• Hardness: 3
• Density: 5.4

• System: Orthorhombic
• Group: mmm, Pmmn
• Lattice: a=8.13, b=8.71, c=7.63