Database of luminescent Minerals


CHAROITE


Chemical Formula: (K,Na)5(Ca,Ba,Sr)8(Si12O30)(Si6O16)(OH) 4H2O

Familly: Silicates

Status: IMA-A

Crystal System: Monoclinic

Mineral for Display: No


Luminescence:


UV Type Main color Intensity Observation Frequency
Short Waves (254 nm):      Red
 

Phosphorescence (in the common meaning of the term) seen by naked eye:


No Data

Comments:


Fluorescence is reported in the violet gem variety of this boron fluoro-silicate from near the Nadym River, Krasnoyarsk territory Russia. Fluorescence is red due to manganese activator. Activators: Mn2+ (very large pic at 530 nm), Ce3+ (360 nm), Eu2+ (408 - 410 nm)(Gaft)


Main Activator(s) and spectrum:


Most Common Activator: Mn2+

Other activators:            Eu2+ , Ce3+ ,

Peaks in the spectrum (nm):

Ce3+  : 360-380nm 

Eu2+  : 408 or 410nm 

Mn2+ repl. Ca2+ : 530nm (band) 

No spectrum for the moment


Best Locality for luminescence(*):


(*)Data are not exhaustive and are limited to the most important localities for fluorescence


Bibliographical Reference for luminescence:



Mineralogical Reference on internet:


  http://www.mindat.org/show.php?name=Charoite

  http://webmineral.com/data/Charoite.shtml

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