EPIDOTE
Chemical Formula: Ca2(Fe+3,Al)3(SiO4)3(OH)
Familly: Silicates
Status: IMA-GP
Crystal System: Monoclinic
Mineral for Display: No
Associated names (luminescent varieties, discredited names, synonymes etc.):
chromepidote, tawnawite,
Luminescence:
UV Type |
Main color |
Intensity |
Observation Frequency |
|
| | | |
Short Waves (254 nm): | Red | Weak | | | | | |
Phosphorescence (in the common meaning of the term) seen by naked eye:
No Data
Comments:
Variety Tawmawite or chromepidote, {Ca2}{(Al,Fe3+,Cr)3}(Si2O7)(SiO4)O(OH) containing chromium.
Main Activator(s) and spectrum:
Most Common Activator: Cr3+
No spectrum for the moment
Comments on activators and spectra:
Tawmawite, variety of epidote containing Cr found in Burma, fluorescence probably due to Cr3+ (to be verified).
Best Locality for luminescence(*):
- Tawmaw, Hpakant-Tawmaw Jade Tract, Hpakant Township, Mohnyin District, Kachin State, Burma (Var. Tawmawite, epidote containing Cr originally reported from Tawmaw, Myitkyina-Mogaung District, Kachin State, Myanmar);
(*)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=Epidote
http://webmineral.com/data/Epidote.shtml
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