Chemical Formula: 4MgO Al2O3 2SiO2 5H2O
Crystal System: Hexagonal
Mineral for Display: No
|Short Waves (254 nm): || Tawn ||Weak|
Phosphorescence (in the common meaning of the term) seen by naked eye:
Main Activator(s) and spectrum:
Best Locality for luminescence(*):
- Sylmar, West Nottingham Township, Chester Co., Pennsylvania, 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 ,
Luminescence Reference on internet:
Mineralogical Reference on internet:
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