Chemical Formula: Na(Ca,U)Ba3Y(CO3)6 3H2O
Crystal System: Triclinic
Mineral for Display: No
|Long Waves (365nm): || Yellowish White ||Weak||Short Waves (254 nm): || Orangy yellow |
|Other colors SW: || |
Phosphorescence (in the common meaning of the term) seen by naked eye:
Donnayite Group with Ewaldite and Weloganite also fluorescent.
Main Activator(s) and spectrum:
Best Locality for luminescence(*):
- Kirovskii apatite mine, Kukisvumchorr Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast, Northern Region, Russia (bright orange SW + pale yellow LW);
(*)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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