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Zinkenite

Year of discovery: 1826 (Graf Jost-Christian mine, Germany), 1981 (Japan)

Locality list: 5 localities of zinkenite

• Pb₉Sb₂₂S₄₂
• [Pb²⁺₉][Sb³⁺₂₂][S₄₂]^84-

• Class: Zinkenite subgroup < Zinkenite group < Rod-type Pb sulfosalts < Sulfosalt class
• Class: Sulfosalt
• Soluble in: hot HCl
• Substitution pseudomorph: Replaced by Oxyplumboroméite (Oxyplumboromeite).

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

• Habit: Prismatic, Fibrous elongated to [0001]
• Aggregate: Columnar, Radial
• Striation: [0001]

• Cleavage: Indistinct on {1120} (3 planes)
• Hardness: 3-3.5
• Density: 5.2

• System: Hexagonal
• Group: 6, P6₃
• Lattice: a=22.1, c=4.3

Etymology: Johann Karl Ludwig Zinken (Zincken) (1790-1862), German mineralogist and economic geologist