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Hongshiite

Year of discovery: 1974 (Hongshila deposit, China), 2020 (Japan)

Locality list: 2 localities of hongshiite

• PtCu
• [Pt][Cu⁰⁺]

• Class: Alloy

• Cu => Sn: Niggliite
• Cu => Fe: Tetraferroplatinum

• Pt => Al: Stolperite
• Pt => Zn: Zhanghengite
• Pt => Pd: Skaergaardite
• Pt => Au: Tetra-auricupride

• Color: Gray
• Luster: Metallic
• Diaphaneity: Opaque

• Hardness: 4

• System: Trigonal
• Lattice: a=10.7, c=3.2