Chemical Formula: (Ca0,5,Na,Mg0,5,K)3-4 [Al3-4 Si9-8O24] 16H2O
Mineral for Display: No
|Long Waves (365nm): || White ||Weak||Short Waves (254 nm): || White ||Weak|
Phosphorescence (in the common meaning of the term) seen by naked eye:
Fluo due to a thin coating of opal?
Main Activator(s) and spectrum:
Best Locality for luminescence(*):
- Sasach, Kaiserstuhl, Germany;
(*)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 ,
Mineralogical Reference on internet:
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