PETALITE
Chemical Formula: LiAlSi4O10
Familly: Silicates
Status: IMA-GP
Crystal System: Monoclinic
Mineral for Display: No
Luminescence:
UV Type |
Main color |
Intensity |
Observation Frequency |
|
| | | |
Long Waves (365nm): | Yellowish White | | | Short Waves (254 nm): | Yellowish White | | | | | | |
Other colors LW: | Pinkish White , |
Other colors SW: | Pinkish White , |
Phosphorescence (in the common meaning of the term) seen by naked eye:
No Data
Thermoluminescence: Yes
Comments:
Petalite from Sweden thermoluminesce blue (De Ment, 1949);
Main Activator(s) and spectrum:
No data
Best Locality for luminescence(*):
- Greenwood, ME, USA (dull Brown LW);
- North Bonneville, WY, USA (white-orange LW);
- Paprok Mine, Kamdesh District, Nuristan Province, Afghanistan ;
- Separation Lake area, Kenora District, Ontario, Canada (white SW associated with fluorapatite fluo bright yellow SW);
- Londonderry Li deposit, Nepean, Coolgardie Shire, Western Australia, Australia (SW & LW pale pink);
(*)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 ,
- Handbook of Fluorescent Gems and Minerals, a practical guide for the gem and mineral collector, Jack de Ment, 1949 ,
Luminescence Reference on internet:
Mineralogical Reference on internet:
http://www.mindat.org/show.php?name=Petalite
http://webmineral.com/data/Petalite.shtml
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