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Bismutoferrite

Year of discovery: 1871 (Schneeberg district, Germany), 2002 (Japan)

Locality list: A locality of bismutoferrite

• Fe³⁺₂Bi(SiO₄)₂(OH)
• [Fe³⁺₂][Bi³⁺][OH|O₃|Si₂O₅]^9-

• Class: Bismutoferrite group
• Class: Phyllosilicate - Oxide - Hydroxide

• Bi => Sb: Chapmanite

• Color: Green-Grayish yellow
• Luster: Adamantine
• Diaphaneity: Translucent-Opaque

• Hardness: 6
• Density: 4.5

• System: Monoclinic
• Group: m, Cm
• Lattice: a=5.2, b=9.0, c=7.7, β=100.7