DOUBTFULL FLUORESCENCE but cited by some authors
Chemical Formula:See THORITE Th(SiO4)1-x(OH)4x
Crystal System: Tetragonal
Mineral for Display: No
|Long Waves (365nm): || Yellowish Green ||Mid waves (320 nm): || Yellowish Green ||Short Waves (254 nm): || Yellowish Green |
|Other colors SW: || |
Yellowish White ,
Phosphorescence (in the common meaning of the term) seen by naked eye:
The specimen from Rock Landing Quarry, Haddam Neck, Haddam, Middlesex Co., Connecticut, USA described in mindat.org is EDXRF identified and the picture shows definitely a fluorescence but from alteration.
Main Activator(s) and spectrum:
Most Common Activator: (UO2)2+ (Uranyl ion) as impurities
No spectrum for the moment
Best Locality for luminescence(*):
- Rock Landing Quarry, Haddam Neck, Haddam, Middlesex Co., Connecticut, 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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