QUARTZ
Chemical Formula: SiO2
Familly: Oxides and hydroxides
Status: IMA-A
Crystal System: Rhomboedric
Mineral for Display: Yes
Associated names (luminescent varieties, discredited names, synonymes etc.):
agate, amethyst, chalcedony, herkimer diamond, Jasper, onyx,
Luminescence:
UV Type |
Main color |
Intensity |
Observation Frequency |
|
| | | |
Long Waves (365nm): | Yellow | | Rarely | Mid waves (320 nm): | Yellow | | Very rarely | Short Waves (254 nm): | Yellow | | Very rarely | | | | |
Other colors LW: | Bluish White , Orangy yellow , Greenish Yellow , |
Other colors MW: | Bluish White , Orangy yellow , Greenish Yellow , |
Other colors SW: | Bluish White , Orangy yellow , Red , Greenish Yellow , |
Long Waves Picture (365nm)
OL (365 nm). Col. G. Barmarin; Photo: G. Barmarin
Galerie de photos:
...
To the gallery (35 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): | White | Very weak | |
Mid Waves (320 nm): | White | Very weak | | Short Waves (254 nm): | White | Very weak | |
Triboluminescence: Yes
Thermoluminescence: Yes
Main Activator(s) and spectrum:
Most Common Activator: (UO2)2+ (Uranyl ion) as impurities
Other activators: Organic impurities , 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
...
To the spectrum gallery (1 spectra in the gallery)
Comments on activators and spectra:
Cathodoluminescence: blue or yellow.
Best Locality for luminescence(*):
- La Sassa, Montecatini Val di Cecina, Pisa Province, Tuscany, Italy (yellowish LW, bright yellow SW);
- Asbach, former DDR (SW Orange, LW Red);
- Hanley Road, Hudson, Wisconsin, USA (fl. medium yellow-orange SW+LW);
- Wadh, Khuzdar District, Balochistan, Pakistan (petroleum/oil inclusion strongly fluorescent with bubble)
(*)Data are not exhaustive and are limited to the most important localities for fluorescence
Bibliographical Reference for luminescence:
- The Henkel Glossary of Fluorescent Minerals, Dr. Gerhard Henkel, Published by the FMS, 1989 ,
- Fluorescence: Gems and Minerals Under Ultraviolet Light, Manuel Robbins, 1994, Geoscience Press, ISBN 0-945005-13-X ,
- The World of Fluorescent Minerals, Stuart Schneider, Schiffer Publishing, 2006, ISBN 0-7643-2544-2 ,
- Luminescent Spectra of Minerals, Boris S. Gorobets and Alexandre A. Rogojine, Moscow, 2002 ,
- Mt St Hilaire Website: http://www.saint-hilaire.ca ,
Luminescence Reference on 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 internet:
http://www.mindat.org/show.php?name=Quartz
http://webmineral.com/data/Quartz.shtml
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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
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