Chemical Formula: (Zr,Ti+4,Fe+3,Al)2(X,Na)2K[Li3Si12O30] ou Zr2KLi3Si12O30
Mineral for Display: No
|Short Waves (254 nm): || Yellowish White ||Very Strong|
Phosphorescence (in the common meaning of the term) seen by naked eye:
Sogdianite from Washington Pass (USA) does not fluoresce.
Main Activator(s) and spectrum:
Most Common Activator: Ti - O
Peaks in the spectrum (nm):
(Ti - O) : large band with max at 480 nm (Gorobets)
No spectrum for the moment
Best Locality for luminescence(*):
- Dara-I-Poiz glacier, Alayskiy Range, Tien Shan mountains, Tadzhikistan;
(*)Data are not exhaustive and are limited to the most important localities for fluorescence
Bibliographical Reference for luminescence:
- Fluorescence: Gems and Minerals Under Ultraviolet Light, Manuel Robbins, 1994, Geoscience Press, ISBN 0-945005-13-X ,
- The World of Fluorescent Minerals, Stuart Schneider, Schiffer Publishing, 2006, ISBN 0-7643-2544-2 ,
- Luminescent Spectra of Minerals, Boris S. Gorobets and Alexandre A. Rogojine, Moscow, 2002 ,
Mineralogical Reference on internet:
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