Lijst van fluorescerende mineralen


FLUORITE


Scheikundige formule: CaF2

Familie: Halogeniden

Status: IMA-GP

Kristal Systeem: Cubisch

Mineraal om tentoon te stellen: Ja

Fluorescerende variëteiten:  chlorophaneyttrofluoriteyttroceriteTiffany stonefluoriet

Fluorescentie:


UV Type Kleur Intensiteit Frequentie van de observatie
Lange Golven (365nm):      Blauw Zeer sterkDikwijls
Midden Golven (320 nm):      Blauw MiddelmatigSoms
Korte Golven(254 nm):      Blauw MiddelmatigSoms
    
Andere kleuren lange golven:                                                            
Blauw wit , Gelig wit , Bleek geel , Geel , Bruin , Rood , Groen , Groenachtig , Violet , Groen wit , Violet blauw , Geelachtig ,
Andere kleuren Midden golven:     
Groen ,
Andere kleuren korte golven:                                                            
Blauw wit , Gelig wit , Bleek geel , Geel , Bruin , Rood , Groen , Groenachtig , Violet , Groen wit , Violet blauw , Geelachtig ,

Daglicht foto


FLUORITE;
Blue Circle Cement Quarry, Eastgate, Weardale, North Pennines, County Durham, England, UK
Photo and Copyright:
Middleearthminerals.com
Used with permission of the author

Lange golf foto (365nm)


FLUORITE;
Blue Circle Cement Quarry, Eastgate, Weardale, North Pennines, County Durham, England, UK
UVLW, Photo and Copyright:
Middleearthminerals.com
Used with permission of the author

 

Foto galerij:

            ...

     Naar de volledige galerij (30 beelden in totaal)


Fosforescentie (in de algemene betekenis) zien met het blote oog:


UV Type Kleur Intensity Observation Frequency
Lange golven(365nm): Groen wit SterkZelden
 

Triboluminescencie: Ja

Thermoluminescencie: Ja


Commentaar:


The classical fluorescing mineral but all fluorites are not luminescent under UV !
CHLOROPHANE variety : green thermoluminescence ;
YTTROFLUORITE variety: SW and LW : yellow, yellowish-white (cream);


Activator en spectrum:


Voornaamste Activator: Eu2+

Andere activatoren: Sm2+ , Sm3+ , Eu3+ , Dy3+ , Ho3+ , Er3+ , Tb3+ , Nd3+ ,

Pieks in het spectrum (nm):

Eu2+ repl. Ca2+: 423-425nm (associated with violet fluorescence)
Sm2+ repl. Ca2+: 708, 733nm
Yb2+ repl. Ca2+: 550nm
Dy3+:468, 478, 575, 654, 658, 663, 671, 685nm
Tb3+:482, 484, 486, 492, 539, 543, 544, 546, 583, 588nm
Er3+:519, 522, 528, 551, 554nm
Sm3+:561nm
Eu3+: 574, 595, 618, 622, 700nm
Nd3+: 920nm
M-center(2F+Na+): large pic at 720-745 nm


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

            ...

  Vers la galerie de spectres (18 spectres au total)


Commentaar over activators en spectra:


Violet fluo associated with Eu2+ (423 nm) with peaks at 320 and 340nm (Ce3+),
yellow fluo associated with Dy3+;
M-center: large pic at 720 nm;
Lifetime: 2μs ( @420nm);

Fluorite was one of the first mineral substance being investigated by George G. Stokes in 1852, hence the name fluorescence given at the phenomen.

As early as 1881, it was pointed out that Cerium was present in fluorite.

In 1906, Urbain studied the cathodoluminescence of fluorite and ascribed the cause of fluorescence to RRE (Yttrium, praeseodymium, samarium, dysprosium, europium, terbium and also gadolinium and Ytterbium in chlorophane); Morse (1907), Tanaka (1924), Nichols (1928) and F. G. Wick also investigated the cause of luminescence of fluorite. 

Fusion of fluorescent fluorite (1100-1200°C) changes the spectrum markedly. Often the blue luminescence spectrum  is changed to a more orange-red, showing sharp lines typical of RRE.

De Ment makes 2 groups in the luminescent fluorites:

group 1: single band in the UV at 300nm and 3 bands in the visible at 475, 508 and 578nm
group 2: two bands in UV at 280 and 300nm and strong peaks at 475, 510, 536, 548 and 578nm in the visible.

 


Beste vindplaats voor fluorescentie(*):


(*)Gegevens zijn niet exhaustieve, ze zijn beperkt tot de meest belangrijke plaatsen voor fluorescentie


Referentie voor fluorescentie:



Referentie voor luminenscentie op het internet:



Mineralogische Referentie op het internet:


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

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

Onderzoek op Internet:

  Beelden op 'Google Image'

  Dokumenten in het Nederlands op Google

  Dokumenten in alle talen op Google

  Onderzoek op Wikipédia


 

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.

 


Snel opzoeking van een fluorescerend mineraal: