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Ferrorhodonite

Year of discovery: 2016 (Broken Hill South mine, Australia), 2020 (Japan)

Locality list: 2 localities of ferrorhodonite

• CaMn₃FeSi₅O₁₅
• (Mn,Fe,Mg,Ca)SiO₃
• [Ca²⁺][Mn²⁺₃][Fe²⁺][Si₅O₁₅]^10-

• Class: Rhodonite group < 5-periodic < Pyroxenoid
• Class: Inosilicate (Single chain)

• Fe => Mn: Rhodonite

• Color: Reddish brown
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent-Translucent

• Cleavage: Perfect on {201} (1 plane), Good on {021}{210} (2 planes)
• Hardness: 6
• Density: 3.7

• System: Triclinic
• Group: (-1), P(-1)
• Lattice: a=6.7, b=7.7, c=11.8, α=105.5, β=92.3, γ=93.9