Database of luminescent Minerals


THORITE


Chemical Formula: (Th,U)SiO4

Familly: Silicates

Status: IMA-GP

Crystal System: Tetragonal

Mineral for Display: No

Associated names (luminescent varieties, discredited names, synonymes etc.):  THOROGUMMITEorangiteuranothorite

Luminescence:


UV Type Main color Intensity Observation Frequency
Long Waves (365nm):      Green
Mid waves (320 nm):      Green
Short Waves (254 nm):      Green
 

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


No Data

Main Activator(s) and spectrum:


Most Common Activator: (UO2)2+ (Uranyl ion) as impurities

Other activators:            Sm3+ , Eu3+ , Dy3+ , Tb3+ , Ti - O ,

Peaks in the spectrum (nm):

(UO2)2+ : broad band peaking at 525 - 530nm (FWMH: 75nm)

Eu3+ : lines at 591, 615 and 702nm

Sm3+ : 602, 640nm

(Ti - O) : large band with max at 520-550nm


Spectrum: Michael Gaft, Petah Tikva, Israel. Plot: Institute of Mineralogy, University of Vienna, Austria, with permission of the authors.


Best Locality for luminescence(*):


(*)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=Thorite

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

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Note: While all due attention has been paid to the implementation of the database, it may contain errors and/or accidental omissions. By nature, the database will always be incomplete because science always evolves according to new analysis.
A request providing no result means only that no such reference exists in the database, but it does not mean that what you are looking for does not exist, just not to our knowledge. If you think you have found an error or omission, please let us know via the contact page being sure to cite the source of information.

 


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