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Lillianite

Year of discovery: 1889 (Lillian mines, USA), 1972 (Japan)

Locality list: 19 localities of lillianite

• Pb₃Bi₂S₆
• (Pb,Ag,Bi)₃Bi₂(S,Se)₆
• [Pb²⁺₃][Bi³⁺₂][S₆]^12-

• Class: Lillianite subgroup < Lillianite group < Large 2D fragment Pb sulfosalts < Sulfosalt class
• Class: Sulfosalt

• Polymorph: Xilingolite (Monoclinic)

• Pb₂ => AgBi: Gustavite (Series)

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

• Habit: Long platy, Fibrous

• Cleavage: Good on {100} (1 plane), Distinct on {010} (1 plane), {001} (1 plane)
• Hardness: 2-3
• Density: 7.1

• System: Orthorhombic
• Group: mmm, Bbmm
• Lattice: a=13.5, b=20.6, c=4.1

Etymology: Lillian mine at Leadville in Colorado state, USA