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Nahcolite

Year of discovery: 1929 (Monte Vesuvius, Italy), 2004 (Japan)

Locality list: A locality of nahcolite

• NaHCO₃
• [Na⁺][H⁺][CO₃]^2-

• Class: Carbonate
• Soluble in: Water, Glycerine
• Fluorescence: UV excitation (Pale blue-Pale yellow)

• H => Na: Natrite
• H => (Na,K,Ca): Gregoryite

• Na => K: Kalicinite
• Na => NH₄: Teschemacherite

• Color: Colorless, White
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent

• Cleavage: Perfect on {101} (1 plane), Good on {111} (2 plane), Distinct on {100} (1 plane)
• Hardness: 2.5
• Density: 2.2

• System: Monoclinic
• Group: 2/m, P2₁/n
• Lattice: a=7.5, b=9.7, c=3.5, β=93.4