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Germanite

Year of discovery: 1922 (Tsumeb mine, Namibia), 1956 (Japan)

Locality list: 4 localities of germanite

• Cu₁₃Fe₂Ge₂S₁₆
• [Cu²⁺₁₃][Fe²⁺₂][Ge⁴⁺₂][S₁₆]

• Class: Germanite group
• Class: Sulfide

• Color: Reddish gray
• Tarnish: Dark gray
• Streak: Dark gray-Black
• Luster: Metallic
• Diaphaneity: Opaque

• Habit: Cubic

• Cleavage: No
• Hardness: 4
• Density: 4.5

• System: Cubic
• Group: (-4)3m, F(-4)3n
• Lattice: a=10.6

• Coexist: Renierite

Etymology: Chemical composition