Base de données des minéraux luminescents

SODALITE

Formule chimique: Na8Al6Si6O24Cl2

Famille: Silicates

Statut: IMA-GP

Système cristallin : Cubique

Minéral de vitrine: OUI

Noms associés (variétés luminescentes, noms discrédités, synonymes etc.):  hackmaniteyooperlite

Luminescence:

Type d'UV Couleur principale (*) Intensité Fréquence d'observation
UV longs (365nm):      Orange Très forteSouvent
UV courts (254 nm):      Blanc jaunâtre (crème) Moyenne
    
Autres couleurs OL:                              
Blanc jaunâtre (crème) , Jaune-orange , Rouge , Rouge violacé , Rose violacé , Rose ,
Autres couleurs OC:                         
Orange , Rouge violacé , Rose violacé , Rose saumon (rose orange) , Vert ,

(*)Vous pouvez ouvrir la charte des couleurs dans une nouvelle fenêtre


Photo en lumière du jour


Sodalite
Ilimaussaq Complex, Greenland;
Courtesy MinerShop.com

Photo Ondes longues (365nm)


Sodalite, UV LW orange;
Ilimaussaq Complex, Greenland;
Courtesy MinerShop.com

Photo Ondes Courtes (254nm)


Sodalite, UV SW orange red ;
Ilimaussaq Complex, Greenland;
Courtesy MinerShop.com

 

Galerie de photos:

            ...

     Accès à la galerie complète (7 images au total)

Phosphorescence (au sens commun du terme) observable à l'oeil nu:

Type d'UV Couleur Intensité Fréquence d'observation
UV longs (365nm): Blanc bleuté ForteSouvent
UV courts (254 nm): Blanc bleuté Très forteSouvent
 

Ténébrescence: OUI



Sodalite, left before and right after exposition to SW (tenebrescence);
Ilimaussaq Complex, Greenland;
Courtesy MinerShop.com

Thermoluminescence: OUI

Commentaires:

HACKMANITE : variété fortement ténébrescente de sodalite.

 

Certaines sodalites du Mont Saint-Hillaire fluorescent en jaune sous les UV ondes courtes et moyennes, plus faiblement en ondes longues. La luminescence met un certain temps avant d arriver à son maximum.

 

Yooperlite: galets de syénite contenant de la sodalite fluorescente trouvée en 2018 par Erik Rintamaki, un marchand de minéraux, sur les plages du lac Supérieur, Michigan, USA (voir Yooperlite).

Activateur(s) et spectre(s):

Activateur le plus courant: S2-

Autres activateurs:            (UO2)2+ (ion Uranyle) en impureté,  Fe3+,  Mn2+ ,  

Pics dans le spectre (nm):

S2- : 587, 608, 628, 653, 677, 707, 732nm

Fe3+? repl. Al3+ : 687-720nm 

(UO2)2+ : 495, 515, 537nm

Mn2+ repl. Na+ : 650nm


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


      ...

  Vers la galerie de spectres (2 spectres au total)

Commentaires sur les spectres et les activateurs (*):

Some time Green Luminescence due to uranium impurities;

 

Cathodoluminescence: intensive greenish-blue or yellow-green or orange.

 

The research history of the yellow-orange luminescence of sodalite was well presented by Sidike et al (2007).

 

It may be summarized that published data on the yellow-orange luminescence spectra of sodalite was ascribed to S2 which was confirmed by the study of synthetic analogs activated by sulfur. Nevertheless, Sidike et al. (2007) noted that the peak wavelengths in the yellow orange band reported by many investigators for sodalite and ascribed to S2-do not

agree. It was never reported by single author on several types of S2-  luminescence spectra from the same deposit, which may be explained by different chemical composition and impurities, but different spectra were ascribed to the S2luminescence center in sodalite samples from the same deposit. The values for luminescence maxima were reported to range from 630 nm to 708 nm. A similar situation takes place in scapolite, where the peak wavelengths of S2- emission bands reported by different authors do not agree (Sidike et al. 2008). It was proposed that the main reason for these discrepancies is probably the unsuitable correction of the measured spectra. Nevertheless, it is difficult to assume that such strong discrepancies may be explained only by the absence of proper calibration. A possible explanation for the differences between published spectra may be the presence of several different S2-  centers, or the presence of the luminescence centers with vibrational structure of other types. (Gaft)

 

The crystal structure of sodalite is an ordered framework of linked AlO4 and SiO4 tetrahedra in which Si and Al alternate on the tetrahedral sites. The overall linkage of (Al,Si)O4 tetrahedra results in cubo-octahedral cavities, which contain a centrally placed anion coordinated tetrahedrally to four cations. The flexibility of the sodalite structure allows a wide range of cations and anions with potential luminescence ability to be substituted into it. Thus, many impurities with potential luminescence ability besides S2-  may be present in the sodalite structure, such as Fe3+ in Al and Si positions, Mn2+ in Na or Be positions, Pb2+ or Tl+ in the Na position and so on. (Gaft)

 

By Laser-induced time-resolved technique Gaft was able to detect two Fe3+ or Cr3+ (broad band at 687 - 700 & 725 nm), possibly Pb2+ (broad band at 440nm), Eu2+ (band at 405nm), Ce3+ ( band at 340nm) and S2- (broad band at 600 - 620 - 653 - 655nm with weak vibrational structure)  emission centers (Gaft)

 

The photoluminescence and excitation spectra of sodalites from Greenland, Canada and Xinjiang (China) are observed at 300 and 10 K in detail. The features of the emission and excitation spectra of the orange-yellow fluorescence of these sodalites are independent of the locality. The emission spectra at 300 and 10 K consist of a broad band with a series of peaks and a maximum peak at 648 and 645.9 nm, respectively. The excitation spectra obtained by monitoring the orange-yellow fluorescence at 300 and 10 K consist of a main band with a peak at 392 nm. The luminescence efficiency of the heat-treated sodalite from Xinjiang is about seven times as high as that of untreated natural sodalite. The emission spectrum of the S2 − center in sodalite at 10 K consists of a band with a clearly resolved structure with a series of maxima spaced about 560 cm−1 (20–25 nm) apart. Each narrow band at 10 K shows a fine structure consisting of a small peak due to the stretching vibration of the isotopic species of 32S34S−, a main peak due to that of the isotopic species of 32S2 − and five peaks due to phonon sidebands of the main peak. (see Aierken Sidike, Alifu Sawuti, Xiang-Ming Wang, Heng-Jiang Zhu, S. Kobayashi, I. Kusachi, N. Yamashita, Fine structure in photoluminescence spectrum of S2 center in sodalite, Physics and Chemistry of Minerals, September 2007, Volume 34, Issue 7, pp 477–484 )

The emission and excitation spectra of yellow luminescence due to S2 in scapolites (from Canada and  from an unknown locality) were observed at 300, 80 and 10 K. Emission and excitation bands at 10 K showed vibronic structures with a series of maxima spaced 15–30 and 5–9 nm, respectively. The relative efficiency of yellow luminescence from scapolite #2 was increased up to 117 times by heat treatment at 1,000°C for 2 h in air. The enhancement of yellow luminescence by heat treatment was ascribed to the alteration of SO32− and SO4 2− to S2 in scapolite. (see Aierken Sidike, I. Kusachi, S. Kobayashi, K. Atobe, N. Yamashita, Photoluminescence spectra of S2 center in natural and heat-treated scapolites, Physics and Chemistry of Minerals, April 2008, Volume 35, Issue 3, pp 137–145 )

 

(*)Les commentaires sur les spectres sont uniquement rédigés en Anglais

Meilleure(s) localité(s) pour la fluorescence (*):

(*)Les données ne sont pas exhaustives et sont limitées à quelques localités remarquables pour la fluorescence

Référence bibliographique pour la luminescence:

Référence pour la luminescence sur internet:

 

Images:

 

 

Videos:

 

Référence minéralogique sur internet:

  http://www.mindat.org/show.php?name=Sodalite

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

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