In the Figure by Campbell and Poduska, we can find illustrated the bands in "mid-infrared (MIR) (2000-400 cm -1 ) and far-infrared (FIR) (650-80 cm -1 ) spectra for eight calcite-containing samples, … to demonstrate the extent and overlap of the spectral ranges. The intensity of each spectrum is normalized to either the 𝜈3 peak (MIR configuration) or the B1 peak (FIR configuration)". In Xu and Poduska, 2014, we find told that, for analyses, the IR "spectra were baseline corrected", using software and, the position of peaks, such as their amplitude and full width at half maximum (FWHM) obtained from Lorentzian peak fits. "Lorentzian functions are widely utilized for peak fitting in IR and Raman spectra, and recent studies have demonstrated that the IR-active v2 and v4 modes in calcite are well matched by this function" (Xu and Poduska, mentioning . Actually, in our Figure -4, we used for v2 and v4 the q-BWF functions as line shapes.