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Bunnoite

Year of discovery: 2014 (Japan as the first occurence in the World)

Locality list: A locality of bunnoite

• Mn₆AlSi₆O₁₈(OH)₃
• [Mn²⁺₆][Al³⁺][(OH)₃|(SiO₃)₆]^15-

• Class: Sorosilicate - Hydroxide

• AlSi(OH)₂ => V⁵⁺: Medaite

• Color: Dark green-Yellowish green
• Streak: Dark green
• Luster: Vitreous
• Diaphaneity: Translucent

• Cleavage: Perfect on {012} (1 planes)
• Hardness: 5.5

• System: Triclinic
• Group: (-1), P(-1)
• Lattice: a=7.5, b=10.0, c=12.1, α=70.5, β=84.2, γ=68.5

Etymology: Dr. Michiaki Bunno (1942-), Japanese mineralogist.