Band 323.5 cm^-1: ν_T + ν OH (B_g) of (CO₃)^2- in Nahcolite

Band 645.5 cm^-1: δ OCO (A_g) of (HCO₃)^- in Nahcolite Band 658.5 cm^-1: δ OCO (B_g) of (HCO₃)^- in Nahcolite Band 685.3 cm^-1: δ OCO (A_g) of (HCO₃)^- in Nahcolite Band 698.0 cm^-1: δ OCO (B_g) of (HCO₃)^- in Nahcolite Band 833.0 cm^-1: γ CO₃ (A_g) of (HCO₃)^- in Nahcolite Band 1045.5 cm^-1: ν CO₃ + γ COH (B_g) of (HCO₃)^- and ν CO₃ + γ COH (A_g) of (HCO₃)^- in Nahcolite Band 1267.5 cm^-1: ν CO₃ + δ COH + ν OH (A_g, B_g) of (HCO₃)^- in Nahcolite Band 1435.5 cm^-1: γ CO₃ + δ OCO of (HCO₃)^- in Nahcolite Band 1456.0 cm^-1: γ CO₃ + δ OCO of (HCO₃)^- in Nahcolite Band 1682.5 cm^-1: ν CO₃ + δ COH (A_g) of (HCO₃)^- and ν CO₃ + δ COH (B_g) of (HCO₃)^- in Nahcolite Band 2025.0 cm^-1: ν OH + ν CO₃ of (HCO₃)^- in Nahcolite

Band 990.5 cm^-1: ν ¹³CO₃ + γ ¹³COH (B_g) of (H¹³C¹⁶O₃)^- in Nahcolite

Band 1622.0 cm^-1: 2 γ CO₃ of (HCO₃)^- in Nahcolite Band 1841.0 cm^-1: ν CO₃ + γ CO₃ + γ COH of (HCO₃)^- in Nahcolite Band 1910.0 cm^-1: unknown of (HCO₃)^- in Nahcolite Band 2270.0 cm^-1: unknown of (HCO₃)^- in Nahcolite Band 2452.0 cm^-1: unknown of (HCO₃)^- in Nahcolite Band 2537.0 cm^-1: unknown of (HCO₃)^- in Nahcolite Band 2916.0 cm^-1: unknown of (HCO₃)^- in Nahcolite Band 3065.0 cm^-1: unknown of (HCO₃)^- in Nahcolite Band 3515.0 cm^-1: unknown of (HCO₃)^- in Nahcolite