Pink dumortierite vis-ir transmission
This plot shows the visible and IR transmission of a ~ 1.5mm path of pink dumortierite. Note that the whole visible region is quite strongly absorbed. The IT spectrum is probably contaminated to some extent by the absorption of the white matrix material which, as shown in the following post, shows significant water (as opposed to OH) absorption indicated by the 1900nm H-O-H bend mode vibration.
Pink dumortierite vis-ir transmission
This plot shows the visible and IR transmission of a ~ 1.5mm path of pink dumortierite. Note that the whole visible region is quite strongly absorbed. The IT spectrum is probably contaminated to some extent by the absorption of the white matrix material which, as shown in the following post, shows significant water (as opposed to OH) absorption indicated by the 1900nm H-O-H bend mode vibration.