Laser-induced time-resolved luminescence of tugtupite, sodalite and hackmanite

We have interpreted a number of luminescence centers in natural tugtupite Na₈Al₂Be₂Si₈ O₂₄Cl₂, sodalite Na₈Al₆ Si₆O₂₄C₂ and hackmanite Na₈ Al₆Si₆O₂₄(Cl₂,S) by use of laser-induced time-resolved luminescence spectroscopy. The main new results are the following: Fe³⁺, Mn²⁺, Eu²⁺, Ce³⁺, mercury type (potentially Pb²⁺, Tl⁺, Sn²⁺ and/or Sb³⁺), radiation induced luminescence centers; several types of S₂^- centers. Spectral shift connected with the presence of luminescence centers, which are detected together with S₂^- centers and impossible to resolve with continuous wave luminescence spectroscopy, is the possible reason for spectral diversity of S₂^- luminescence centers presented in different publications.