Database of luminescent Minerals


Chemical Formula: LiAlSi2O6

Familly: Silicates


Crystal System: Monoclinic

Mineral for Display: Yes

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


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

Long Waves Picture (365nm)

OL (365 nm). Col. G. Barmarin; Photo: G. Barmarin


Galerie de photos:


     To the gallery (7 images in the gallery)

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

UV Type Color Intensity Observation Frequency
Long Wave (365nm): Orange
Short Waves (254 nm): Orange

Ténébrescence: OUI

Thermoluminescence: Yes


variety triphane (colorless), Kunzite (pink) and Hiddenite (green).

Main Activator(s) and spectrum:

Most Common Activator: Mn2+

Other activators:            Cr3+ ,

Peaks in the spectrum (nm):

Mn2+ substituting for Li : broad band around 596 - 615nm

Cr3+ : 690nm

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

Comments on activators and spectra:

Mn2+ is shown to be mainly in Li-sites rather than Al-sites and gives rise to a broad emission centred at 600 nm. In Cr-rich crystals only one R1 line is observed and Cr3+ emission is evident at room temperature. In green hiddenite crystals Cr3+ emission is dominant at room temperature where the R-lines are superimposed on a broad-band emission. (Source: Luminescence spectroscopy of Cr3+ and Mn2+ in spodumene (LiAlSi2O6), WALKER G. see below).

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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