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Toyohaite

Year of discovery: 1989 (Japan as the first occurence in the World)

Locality list: A locality of toyohaite

• Ag₂FeSn₃S₈
• [Ag⁺][Fe²⁺_0.5Sn⁴⁺_1.5][S₄]^8-

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

• Ag => Cu: Rhodostannite

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

• Habit: Fine grains

• Hardness: 4
• Density: 4.9

• System: Tetragonal
• Group: 4/m, I4₁/a
• Lattice: a=7.5, c=10.8

Etymology: Toyoha mine in Hokkaido, Japan, where this mineral was discovered for the first time.