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Brugnatellite

Year of discovery: 1909 (Crestùn mine, Italy), 1973 (Japan)

Locality list: 13 localities of brugnatellite

• Mg₆Fe(CO₃)(OH)₁₃,4H₂O
• [Mg²⁺₆][Fe³⁺][(OH)₁₃|CO₃]^15-,4H₂O

• Class: Hydrotalcite supergroup
• Class: Carbonate - Hydroxide

• Color: Pink, Pale brownk
• Streak: White
• Luster: Pearly
• Diaphaneity: Transparent

• Cleavage: Perfect on {0001} (1 plane)
• Hardness: 2
• Density: 2.1

• System: Hexagonal
• Group: 6/mmm, P6₃/mmc
• Lattice: a=5.5, c=16.0