Luminescence properties of rare earth ions in fluorite, apatite and scheelite minerals

摘要

The steady-state luminescence spectroscopy was used for identification of RE ions in fluorite CaF_2, apatite Ca_5 [(PO_4)_3F] and scheelite CaWO_4 minerals. By using selective excitation the luminescence spectra were ascribed to Er~(3+), Ho~(3+), Dy~(3+) and Sm~(3+) ions in fluorites and Sm~(3+), Pr~(3+) and Eu~(3+) in apatites besides the presence of Ce~(3+) and Eu~(2+) ions. For the scheelite the luminescence was ascribed to the Eu~(3+), Er~(3+), Dy~(3+), Sm~(3+) and Pr~(3+) ions besides the luminescence of intrinsic [WO_4]~(2-) group.