Chemical Formula: Na2Nb4O11 9H2O
Familly: Oxides and hydroxides
Crystal System: Monoclinic
Mineral for Display: No
|Long Waves (365nm): || Yellowish White ||Medium||Short Waves (254 nm): || Yellowish White ||Strong|
Phosphorescence (in the common meaning of the term) seen by naked eye:
Main Activator(s) and spectrum:
Best Locality for luminescence(*):
- Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada;
(*)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 ,
- Luminescenza nel regno minerale, Guido Mazzoleni, fotografia Roberto Appiani, Libri Sandit, 2010, ISBN 978-88-95990-63-7 ,
Luminescence Reference on internet:
Mineralogical Reference on internet:
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