The phosphate mineral arrojadite-(KFe) and its spectroscopic characterization

► We have undertaken a study of the arrojadite-(KFe) mineral. ► Electron probe analysis shows the formula of the mineral is complex. ► The complexity of the mineral formula is reflected in the vibrational spectroscopy. ► Vibrational spectroscopy enables new information about this complex phosphate mineral arrojadite to be obtained.