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Izoklakeite

Year of discovery: 1986 (Izok Lake mine, Canada, and Vena mines, Sweden), 1982 (Japan)

Locality list: 2 localities of izoklakeite

• Pb₂₇Cu₂Sb₁₉S₅₇
• Pb₂₇(Cu,Fe,Ag)₂(Sb,Bi)₁₉S₅₇
• [Pb²⁺₂₇][Cu²⁺₂][Sb³⁺₁₉][S₅₇]^114-

• Class: Izoklakeite subgroup < Zinkenite group < Rod-type Pb sulfosalts < Sulfosalt class
• Class: Sulfosalt

• Sb => Bi: Giessenite (Series)

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

• Habit: Acicular

• Cleavage: Good on {001} (1 plane)
• Hardness: 3.5-4
• Density: 6.5

• System: Orthorhombic
• Group: mmm, Pnnm
• Lattice: a=33.9, b=38.0, c=4.1

Etymology: Lake Izok in Canada