Tugtupite Visible Spectra (250 - 750 nm)
Tugtupite, Na4BeAlSi4O12Cl, is an uncommon mineral which turns pink in strong sunlight
colorless when heated. The color orginates from minor amounts of
in the mineral. The S4 molecule is believed to
responsible for the red color.
see also the sodalite
to the Index of Data Files
Mineral Spectroscopy home page