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Shiranuiite

Year of discovery: 2024 (Japan as the first occurence in the World)

Locality list: A locality of shiranuiite

• CuRh₂S₄
• [Cu⁺][(Rh³⁺Rh⁴⁺)][S₄]^8-

• Class: Carrollite subgroup < Thiospinel group < Spinel supergroup
• Class: Sulfide

• Rh⁴⁺ => Pt: Ezochiite

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

• Cleavage: {111} imperfect (8 planes)
• Hardness: 5
• Density: 5.8

• System: Cubic
• Group: m3m, Fd(-3)m
• Lattice: a=9.8

Etymology: Shiranui, the fire in the ancient Japanese legend in Kumamoto pref. where the mineral was discovered.