Database of luminescent Minerals


MICROCLINE


Chemical Formula: KAlSi3O8

Familly: Silicates

Status: IMA-GP

Crystal System: Triclinic

Mineral for Display: No

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

Luminescence:


UV Type Main color Intensity Observation Frequency
Long Waves (365nm):      Green Weak
Short Waves (254 nm):      Red Medium
 

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


No Data

Comments:


Green colored amazonite from Zinkgruvan Mines, Zinkgruvan, Askersund, Närke, Sweden, develop and enhance her green color in sunlight. Newly collected they are grey or only slightly green.


Main Activator(s) and spectrum:


Most Common Activator: Fe3+

Other activators:            Eu2+ , Ce3+ , Eu3+ ,

Peaks in the spectrum (nm):

Ce3+: broad band peaking at 335nm
Eu3+: broad band peaking at 402
Eu2+: 395nm
Fe3+ repl. Al3+ or Si4+: band peaking at 700nm
Pb+ repl. K+: 900nm


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

   ...

  To the spectrum gallery (1 spectra in the gallery)


Comments on activators and spectra:


Red fluorescence due to trivalent iron.
Ce   3+ and Eu3+ (Gaft)

 

Cathodoluminescence: blue.

 


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=Microcline

  http://webmineral.com/data/Microcline.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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