Database of luminescent Minerals


KELDYSHITE


Chemical Formula: Na2-xHxZrSi2O7 nH2O

Familly: Silicates

Status: IMA-A

Mineral for Display: No


Luminescence:


UV Type Main color Intensity Observation Frequency
Long Waves (365nm):      Yellow
Short Waves (254 nm):      Yellowish White Strong
Other colors LW:     
Bluish White ,
Other colors SW:     
Bluish White ,

Daylight Picture


KELDYSHITE and PARAKELDYSHITE xls, Mt Rasvumchorr, Khibiny massif,
Kola peninsula, MurmanskajaOblast, Russia;
Copyright 2006 S. Schneider,
The World of Fluorescent Minerals,
Used with permission of the author,

Short Waves Pictures (254nm)


KELDYSHITE and PARAKELDYSHITE xls, Mt Rasvumchorr, Khibiny massif,
Kola peninsula, MurmanskajaOblast, Russia;
Keldyshite fluoresce yellow SW and parakeldyshite white SW,
Copyright 2006 S. Schneider,
The World of Fluorescent Minerals,
Used with permission of the author,

 

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


No Data

Comments:


voir aussi parakeldyshite. Blue luminescence due to TiO6 (Gaft)


Main Activator(s) and spectrum:


Most Common Activator: n[TiO6] cluster

Peaks in the spectrum (nm):

Very large band with max at 555 nm and shoulder at 480 nm (Gorobets)

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=Keldyshite

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

Search on Internet:

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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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