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Vittinkiite

Year of discovery: 2019 (Vittinki mine, Finland), 2020 (Japan)

Locality list: 2 localities of vittinkiite

• MnSiO₃
• (Mn,Fe,Mg,Ca)SiO₃
• [Mn²⁺][Mn²⁺₃][Mn²⁺][Si₅O₁₅]^10-

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

• Polymorph: Pyroxmangite (Low-temperature High-pressure, Triclinic)

• Mn => Ca: Rhodonite

• Mn₂ => CaMn: Bustamite

• Mn₃ => Fe₃: Pyroxferroite
• Mn₃ => Mg₃: Akimotoite
• Mn₃ => Ca₃: Wollastonite

• Mn₃ => LiHMn₂: Tanohataite
• Mn₃ => NaHMn₂: Sérandite (Serandite)

• Si => Ti: Pyrophanite
• Si => Sb: Melanostibite

• Color: Red, Pink, Reddish brown
• Streak: White
• Luster: Vitreous, Pearly
• Diaphaneity: Transparent-Translucent

• Cleavage: Perfect on {110} and {1-10} (2 planes), Good on {001} (1 plane)

• System: Triclinic
• Group: (-1), P(-1)
• Lattice: a=6.7, b=7.6, c=11.8, α=105.7, β=92.4, γ=94.3