QUARTZ

 


Chemical formula: SiO2

Family: Oxides and hydroxides

Status: IMA-A

Crystal system : Rhomboedric

Display mineral: OUI

Associated names (luminescent varieties, discredited names, synonyms, etc.): agateamethystecalcedoineherkimer diamondJaspeonyx

 

Luminescence:

Longwave UV (365nm) colors:

                   


Yellow , Bluish White , Orangy yellow , Greenish Yellow ,

Frequency LW:Rarely

Midwave UV (320nm) colors:

                   


Yellow , Bluish White , Orangy yellow , Greenish Yellow ,

Frequency MW:Very rarely

Shortwave UV (254nm) colors:

                        


Yellow , Bluish White , Orangy yellow , Red , Greenish Yellow ,

Frequency SW:Very rarely

Longwave (365nm) picture


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

 

Pictures Galery:

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Phosphorescence (in the common sense of the term) observable with the naked eye:

Type d'UV

Couleur

Intensité

Fréquence d'observation

UV longs (365nm):

White Very weak

UV moyens (320 nm):

White Very weak

UV courts (254 nm):

White Very weak
 

Triboluminescence: OUI

Thermoluminescence: OUI

Comments:

Activator(s) and spectrum:

Activator(s): (UO2)2+ (ion Uranyle) en impureté, ST (Singlet-triplet)-Matière organique en impureté,  Fe3+,  

Peaks in the spectrum (nm):

Fe3+ : 680 nm (Gorobets)

Oil inclusions : 437, 489, 512, 546, 601nm

Quartz from La Sassa, Italy: 500, 520, 555, 595, 666nm


Quartz with "Oil Inclusions".
Excitation: led 370nm. Col. G. Barmarin; Spectre: G. Barmarin

Spectrum Galery:

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Comments on spectrum and activators:

Cathodoluminescence: blue or yellow.

Best localities for fluorescence (*):

(*)The data are not exhaustive and are limited to a few remarkable localities for fluorescence

Bibliographic reference for luminescence:

Reference for luminescence on the Internet:

 
  • UV-Waves September/October 1996, UV Minerals in former East Germany by H.J.Weller and J. Slacik reprinted from Fundgrube, XXVI, 1990,#3
  • UV-Waves (Journal Of The Fluorescent Mineral Society), 2012, Volume 32: A preliminary report: The glowing quartz from La Sassa, Tuscany, Italy, Antonello Dallegno and Guido Mazzoleni.  
  • MONT-SAINT-HILAIRE, History, Geology, Mineralogy, Laszlo HORVATH, The Canadian Mineralogist, Special Publication 14, 2019

 

Images:

 

 

Videos:

 

 

Mineralogical reference on the Internet:

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

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

Internet Search:

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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.