Optical Spectra of Tugtupite, Na4BeAlSi4O12Cl
-
Povarennykh
AS, Platonov AN, Tarashchan AN, Belichenko VP (1971) Color and
luminescence of tugtupite (beryllosodalite) from Ilimaussaq, South
Greenland. Meddelelser om Groenland 181, 1-12.
- Blumentritt
F, Fritsch E (2021) Photochromism and Photochromic Gems: A Review and
Some New Data (Part 1). The Journal of Gemmology 37,780-800.
- Gao Y, Sun X (2023) Photochromism and Phosphorescene of Tugtupite. The Journal of Gemmology 38, 429-431.