Database of luminescent Minerals


ALLOPHANE


Chemical Formula: Al2SiO5 nH2O

Familly: Silicates

Status: IMA-GP

Crystal System: Amorphous

Mineral for Display: No

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

Luminescence:


UV Type Main color Intensity Observation Frequency
Long Waves (365nm):      Blue
Short Waves (254 nm):      Greenish Yellow
 

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

Peaks in the spectrum (nm):

500 nm, 523 nm, 550 nm

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:



Luminescence Reference on internet:



Mineralogical Reference on internet:


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

  http://webmineral.com/data/Allophane.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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