Chemical Formula: Ca4(UO2)4(Si2O5)5,5(OH)5 13H2O
Mineral for Display: No
Associated names (luminescent varieties, discredited names, synonymes etc.): ursilite,
|Short Waves (254 nm): || Green |
Phosphorescence (in the common meaning of the term) seen by naked eye:
No phosphorescence seen by naked eye whatever the type of UV
Main Activator(s) and spectrum:
Most Common Activator: (UO2)2+ (Uranyl ion) intrinsic
No spectrum for the moment
Best Locality for luminescence(*):
- Dara-i-Pioz Glacier, Alai Range, Tien Shan Mtn, Region of Republican Subordination, Tajikistan;
(*)Data are not exhaustive and are limited to the most important localities for fluorescence
Bibliographical Reference for luminescence:
Mineralogical Reference on internet:
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