Chemical Formula: Ba(UO2)2(AsO4)2 8H2O
Familly: Phosphates, Arseniates, Vanadates
Crystal System: Tetragonal
Mineral for Display: No
|Long Waves (365nm): || Green ||Strong||Short Waves (254 nm): || Green ||Strong|
Phosphorescence (in the common meaning of the term) seen by naked eye:
Main Activator(s) and spectrum:
Most Common Activator: (UO2)2+ (Uranyl ion) intrinsic
Peaks in the spectrum (nm):
(UO2)2+ : 492.4, 505.7, 527.9 (527), 551.4, 576.9 (575), 606.1 (603)
Metaheinrichite, Wittichen, Schwarzwald, Germany.
Excitation: laser 405nm. Col. G. Barmarin; Spectre: G. Barmarin
Best Locality for luminescence(*):
- Schmiedestollen Halde, Wittichen, Schwarzwald, Germany;
- White King Mine, Lakeview, Lake Co., Oregon, USA;
(*)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 ,
- 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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