A Study of Sodalite by Paramagnetic Resonance

Abstract

<p> Single crystals of sodalite have been studied by means of electron paramagnetic resonance (E. P.R.) both at 0.8 cm. and 3 cm. wavelength. The existence of at least four different E. P. R. spectra was established of which one was attributed to the manganese impurity and a possible model for two other spectra is proposed. It was found that two of the observed spectra disappear upon heat treatment although the bleaching of the characteristic blue colour of sodalite crystals does not appear to be related to any of the spectra studied. </P>