Lijst van fluorescerende mineralen


DIAMOND


Scheikundige formule: C

Familie: Elementen

Status: IMA-GP

Kristal Systeem: Cubisch

Mineraal om tentoon te stellen: Ja


Fluorescentie:


UV Type Kleur Intensiteit Frequentie van de observatie
Lange Golven (365nm):      Blauw SterkSoms
    
Andere kleuren lange golven:                                                                 
Blauw wit , Gelig wit , Roos wit , Bleek geel , Geel , Bruin oranje , Rood , Zalm roos , Groen geel , Groen , Blauw , Groen wit , Geelachtig ,

Daglicht foto


Diamant, Congo;
Photo et col. G. Barmarin

Lange golf foto (365nm)


Diamant UVLW (superbright 2000), Congo;
Photo et col. G. Barmarin

 

Foto galerij:

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     Naar de volledige galerij (14 beelden in totaal)


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


UV Type Kleur Intensity Observation Frequency
Lange golven(365nm): Blauw wit SterkSoms
Korte golven (254 nm): Rood SterkHeel zelden
 

Thermoluminescencie: Ja


Commentaar:


Probably the earliest phosphorescent mineral known after exposition to the sunlight.

In 1663, Robert Boyle first noted the triboluminescence of diamond when broken.

Mrs Kunz wife of the well known mineralogist possessed a prodigious diamond  that was phosphorescent in the dark for some minutes after just being exposed to a small pocket electric lamp.

Kunz in 1895 attributed the fluorescence and phosphorescence that is shown by some diamonds to the presence of a hypothetical hydrocarbon, for which  e gave the name ' tiffanyite '. 

About One diamond upon four is luminescent.


Activator en spectrum:


Voornaamste Activator: N (Stikstof)

Andere activatoren: B (Boron) ,

Pieks in het spectrum (nm):

N3 center: 442, 507 nm
H3 center: 520nm 
A-band center: 452nm
N3 center: 415, 428, 439, 452, 731nm


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

            ...

  Vers la galerie de spectres (12 spectres au total)


Commentaar over activators en spectra:


Luminescence of diamond is related to various defects in its structure, almost always related to N (Nitrogen) atoms (The atomic radius of C and N are nearly equal to 0.77 angströms).

N3 center: color and luminescence center attributed to 3 Nitrogen atoms bounded to the same Carbon atom or a vacancy.  The luminescence spectra of this center is associated with a large peak at 440-450nm with a fine structure (peaks around 415, 428, 438 and 451nm) a lifetime: 30-40ns and an absoption energy of 2,985eV but other centers (Al imputity for exemple) contribute to this spectrum even if it is not possible aboce 170K to discriminate their contribution.

 

H3 and H4 centers: two Nitrogen atoms coupled with a vacancy in two different configurations. Absorption energy: 2,463eV. Decay-time: 15-20ns

 

S1 center: a combination of one vacancy with one Nitrogen atom

 

S2 center: a combination of two vacancies with one Nitrogen atom

 

S3 center: a combination one vacancy with several Nitrogen atom

 

H3, H4, S2 and S3 centers are characterized by broad bands at 520-545nm with very weak lines at 489nm and 523nm (S2), 498nm (S3) and 503nm (H3)

 

A-band at 480nm observed in natural diamond of type I

A-band with a maximum at 440 nm in natural diamond of type II (low Nitrogen diamonds)

 

Some  blue diamonds exhibit a remarkable red phosphorescence such as Hope or Wittelsbach-Graff (both of Indian origin) and Blue Moon (South Africa Cullinan Mine);

All natural, untreated type IIb blue diamonds (diamond without Nitrogen but containing some uncompensated Boron) show a phosphorescence with two emission bands: one at 660 nm and another at 500 nm but for those three diamonds, unlike usually, it is the blue that decreases more quickly than the red causing this magnificent red phosphorescence.

Type IIb diamonds with orange-red phosphorescence are more commonly originated in India or Venezuela but not in the case of the blue Moon coming from the Cullinan Mine in South Africa where diamond are normally found with a more typical brief bluish phosphorescence.

After exposure to short-wave ultraviolet light, the Blue Moon display orange-red phosphorescence (around 660nm) that remain visible for up to 20 seconds. (see bibliography: Eloise Gaillou, Gems and Gemmology, Winter 2014)


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=Diamond

  http://webmineral.com/data/Diamond.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: