Database of luminescent Minerals


Chemical Formula:See ALBITE /Group of minerals: ALBITE, MICROCLINE, SANIDINE

Familly: Silicates


Mineral for Display: No


UV Type Main color Intensity Observation Frequency
Short Waves (254 nm):      Red
Other colors SW:     
Blue ,

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

No Data

Triboluminescence: Yes

Thermoluminescence: Yes

Main Activator(s) and spectrum:

Most Common Activator: Fe3+

Other activators:            Pb2+ , Eu2+ , Ce3+ , Sm3+ , Dy3+ , Tb3+ , Mn2+ , Nd3+ , Tm3+ , Tl+ ,

Peaks in the spectrum (nm):

Eu3+ : 614, 624, 710nm
Fe3+  : large band at 735 - 741 to 765nm  (FWHM: 120nm)
Tm3+ : 798nm 
Nd3+ : 895nm

Pb+ : band at 851nm (FWHM : 50nm )

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


  To the spectrum gallery (3 spectra in the gallery)

Comments on activators and spectra:

Steady-state luminescence of feldspars is well studied. The following impurity centers have been found: Tl+ , Pb+, Pb2+, REE3+ (Ce, Dy, Sm, Tb, Nd), Eu2+, Mn2+, Fe3+, Cr3+ (Gaft)


Luminescence of monovalent Pb was firstly proposed for explanation of IR luminescence band peaking at 860 nm in emission spectrum of feldspars


The UV emission of feldspar at 290 nm is linked with the presence of Na and cracks-strain exsolution-twinning; at 340 nm with stress in Si—O bonds; the broad blue band (380-450nm) with [AlO4]o defects; at  560nm with Mn2+ point defects and at 720nm with iron in the lattice. 

Iron-rich feldspars: luminescence emissions at 560 nm and 750 nm come from point defects of Mn2+ and Fe3+ in feldspar lattices.  Furthermore, high amounts of these impurities (e.g. 0.3%) lower these light emissions. Dark and iron-rich samples emit weak luminescence signals.

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:

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