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Numanoite

Year of discovery: 2005 (Japan as the first occurence in the World)

Locality list: A locality of numanoite

• Ca₄CuB₄O₆(OH)₆(CO₃)₂
• [Ca²⁺₄][Cu²⁺][(CO₃)₂|(H₃B₂O₆)₂]^10-

• Class: Soro-Borate (Tetrahedron) - Carbonate

• Cu => Mg: Borcarite (Partial series)

• Color: Bluish green
• Luster: Vitreous
• Diaphaneity: Translucent

• Cleavage: Perfect on {100} and {110} (3 planes)
• Hardness: 4.5
• Density: 3.0

• System: Monoclinic
• Group: 2/m, C2/m
• Lattice: a=17.8, b=8.4, c=4.4, β=102.4

Etymology: Professor Tadayuki Numano (1931-2001), Japanese mineralogist of Okayama University