Chemical Formula: Mg(UO2)2(AsO4)2 10-12H2O
Familly: Phosphates, Arseniates, Vanadates
Mineral for Display: No
|Long Waves (365nm): || Green ||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
Novacekite can have two forms: nováčekite-I is triclinic while nováčekite-II is monoclinic.
Nováčekite-I is very unstable under ambient conditions and quickly dehydrates to nováčekite-II and also to metanováčekite.
Most Nováčekite specimens in collections seem to be either nováčekite-II or metanováčekite.
Main Activator(s) and spectrum:
Most Common Activator: (UO2)2+ (Uranyl ion) intrinsic
Peaks in the spectrum (nm):
(UO2)2+ : 486.3, 502.6, 523.1, 546.8, 572.8, 601.7nm
No spectrum for the moment
Best Locality for luminescence(*):
- Serra das Éguas, Brumado (Bom Jesus dos Meiras), Bahia, Northeast Region, Brazil;
- Animas Mine, Francisco Portillo, West Camp, Santa Eulalia District, Mun. de Aquiles Serdán, Chihuahua, Mexico;
(*)Data are not exhaustive and are limited to the most important localities for fluorescence
Bibliographical Reference for luminescence:
- The Henkel Glossary of Fluorescent Minerals, Dr. Gerhard Henkel, Published by the FMS, 1989 ,
- Fluorescence: Gems and Minerals Under Ultraviolet Light, Manuel Robbins, 1994, Geoscience Press, ISBN 0-945005-13-X ,
- Spectroscopic properties of uranium(VI) minerals studied by TRLFS, G. Geipel and Al. Radiochim Acta 88 (2000) ,
Luminescence Reference on internet:
Mineralogical Reference on internet:
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