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Pekoite

Year of discovery: 1975 (Juno mine (Peko mine), Australia), 2010 (Japan)

Locality list: A locality of pekoite

• CuPbBi₁₁S₁₈
• CuPbBi₁₁(S,Se)₁₈
• [Cu⁺][Pb²⁺][Bi³⁺₁₁][S₁₈]^36-

• Class: Aikinite-Bismuthinite series < Aikinite-Bismuthinite group < Rod-type Pb sulfosalts < Sulfosalt class
• Class: Sulfosalt

• (CuPb)_0.17(Bi[])_0.83 => Bi[]: Bismuthinite (Series)
• (CuPb)_0.17(Bi[])_0.83 => (CuPb)_0.33(Bi[])_0.66: Gladite (Series)
• (CuPb)_0.17(Bi[])_0.83 => (CuPb)_0.40(Bi[])_0.60: Salzburgite (Series)
• (CuPb)_0.17(Bi[])_0.83 => (CuPb)_0.43(Bi[])_0.57: Paarite (Series)
• (CuPb)_0.17(Bi[])_0.83 => (CuPb)_0.50(Bi[])_0.50: Krupkaite (Series)
• (CuPb)_0.17(Bi[])_0.83 => (CuPb)_0.67(Bi[])_0.33: Emilite (Series)
• (CuPb)_0.17(Bi[])_0.83 => (CuPb)_0.83(Bi[])_0.17: Friedrichite (Series)
• (CuPb)_0.17(Bi[])_0.83 => CuPb: Aikinite (Series)

• Color: Lead gray
• Streak: Lead gray
• Luster: Metallic
• Diaphaneity: Opaque

• Cleavage: Good on {010} (1 plane)
• Hardness: 2-3

• System: Orthorhombic
• Group: mm2, P₁am
• Lattice: a=11.5, b=33.7, c=4.0