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Manganbabingtonite

Year of discovery: 1967 (Rudnyi Kaskad deposit, Russia), 1980 (Japan)

Locality list: 3 localities of manganbabingtonite

• Ca₂MnFeSi₅O₁₄(OH)
• Ca₂(Mn,Fe)FeSi₅O₁₄(OH)
• [Ca²⁺₂][Mn²⁺][Fe³⁺][HSi₅O₁₅]^9-

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

• Mn => Fe: Babingtonite (Series)

• Color: Black, Dark brown
• Streak: Dark brown
• Luster: Vitreous
• Diaphaneity: Opaque

• Habit: Rhombohedral

• Cleavage: Perfect on {001} (1 plane), Indistinct on {110} (1 plane)
• Hardness: 5.5-6
• Density: 3.5

• System:Triclinic
• Group: (-1), P(-1)
• Lattice: a=6.9, b=11.7, c=6.8, α=90.4, β=93.8, γ=104.8