Data for the characterisation of chemical impurities related to the mineralogy of the perlite ore of the Zeitindag deposit (Turkey). The objective was to characterise the mineralogical content of the perlite ore and find possible correlations between mineralogy and the presence of heavy metals. Mineralogy was studied with infrared spectroscopy (laboratory(ATR) and field (portable ASD) instruments) and the chemistry with XRF and LIBS data.