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Stannoidite

Year of discovery: 1966 (Japan as the first occurence in the World)

Locality list: 17 localities of stannoidite

• Cu₈Fe₃Sn₂S₁₂
• Cu₈(Fe,Zn)₃Sn₂S₁₂
• [Cu⁺₆][Cu²⁺₂][Fe²⁺₃][Sn⁴⁺₂][S₁₂]^24-

• Class: Mawsonite group
• Class: Sulfide

• Color: Yellowish brown
• Tarnish: Dull luster
• Streak: Dark brownish gray
• Luster: Metallic
• Diaphaneity: Opaque

• Hardness: 4
• Density: 4.7

• System: Orthorhombic
• Group: 222, I222
• Lattice: a=10.8, b=5.4, c=16.1

Etymology: Similar appearance and chemistry to Stannite.

Synonym: Hexastannite