Luminescence emission of natural NaCl

► Sodium chloride exhibits a complex RL, TL and IRSL spectral emission. ► The RL signal can be deconvoluted into five Gaussian wavebands at 290, 370, 430, 500 and 620 nm. ► 3D-induced TL exhibits three emission bands at 370, 430 and 500 nm. ► The IRSL spectra show low intensity emission with non-well defined peaks.