Scapolite Group Visible Spectra (350 - 1100 nm)The scapolite group minerals vary from marialite, Na4Al3Si9O24Cl, to meionite, Ca4Al6Si6O24CO3
The origin of color of violet scapolite is related to radiation-induced
color centers involving the CO3-
ion that can be formed from radiation damage.
The gem quality varieties of the scapolite group of minerals
pictured here are usually the mineral marialite.
to references about the spectra of scapolite group minerals
to the list of minerals
to the Index of Data Files
Mineral Spectroscopy home page