MATHESIUSITE
Chemical Formula: K5(UO2)4(SO4)4(VO5)·4H2O
Familly: Sulfates
Status: IMA-A
Crystal System: Tetragonal
Mineral for Display: No
Luminescence:
UV Type |
Main color |
Intensity |
Observation Frequency |
|
| | | |
Long Waves (365nm): | Yellowish Green | | | Short Waves (254 nm): | Yellowish Green | | | | | | |
Phosphorescence (in the common meaning of the term) seen by naked eye:
No phosphorescence seen by naked eye whatever the type of UV
Comments:
Mathesiusite shows strong yellowish green fluorescence both in long- and short-wave UV radiation.
Main Activator(s) and spectrum:
Most Common Activator: (UO2)2+ (Uranyl ion) intrinsic
No spectrum for the moment
Best Locality for luminescence(*):
- Geschieber vein, Svornost Mine, Jáchymov, Jáchymov District, Krušné Hory Mts, Karlovy Vary Region, Czech Republic;
(*)Data are not exhaustive and are limited to the most important localities for fluorescence
Bibliographical Reference for luminescence:
Luminescence Reference on internet:
Mineralogical Reference on internet:
http://www.mindat.org/show.php?name=Mathesiusite
http://webmineral.com/data/Mathesiusite.shtml
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