Database of luminescent Minerals


chalcedony


Chemical Formula:See QUARTZ

Status: NR

Crystal System: Polycrystalline

Mineral for Display: No

Associated names (luminescent varieties, discredited names, synonymes etc.):  beekiteyoungiteopalized wood (fossil)

Luminescence:


UV Type Main color Intensity Observation Frequency
Long Waves (365nm):      Greenish white
Short Waves (254 nm):      Green
Other colors LW:          
Yellow , Orangy yellow ,
Other colors SW:          
Yellowish White , Tawn ,

Daylight Picture


calcedoine;
Photo and Copyright: James Hamblen
Site of the author
Used with permission of the author

Short Waves Pictures (254nm)


calcedoine;
UVSW
Photo and Copyright: James Hamblen
Site of the author
Used with permission of the author

 

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


No Data

Thermoluminescence: Yes


Main Activator(s) and spectrum:


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

Peaks in the spectrum (nm):

(UO2)2+ : 502nm, 521nm, 544nm, 568nm, 601nm (fluo green)

569nm, 601nm, 647nm (fluo yellow)


   ...

  To the spectrum gallery (1 spectra in the gallery)


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=Chalcedony

  http://webmineral.com/data/Chalcedony.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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