[ Top ] [ Japanese ]

Kannanite

Year of discovery: 2017 (Japan as the first occurence in the World)

Locality list: A locality of kannanite

• Ca²⁺₄MgAl₅(Si₅V)O₂₂(OH)₆
• (Ca,Mn²⁺)₄(Al,Mg,Fe³⁺,Mn³⁺)₆Si₅(V,As)O₂₂(OH,O)₆
• [Ca²⁺₄][Al³⁺][Mg²⁺][Al³⁺₄][(OH)₆|VO₄|(SiO₄)₂|Si₃O₁₀]^25-

• Class: Ardennite group
• Class: Sorosilicate - Nesosilicate - Vanadate - Hydroxide
• Fluorescence (UV): not observed

• Ca => Mn: Ardennite-(V)

• Color: Yellow
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent

• Cleavage: Perfect on {0100} (a plane)
• Hardness: 6

• System: Orthorhombic
• Group: mmm, Pnmm
• Lattice: a=8.9, b=6.0, c=18.9

Etymology: Mount Kannan in Ehime prefecture where this mineral was discovered.