GAULTITE
Chemical Formula: Na4[Zn2Si7O18] 5H2O
Familly: Silicates
Status: IMA-A
Crystal System: Orthorhombic
Mineral for Display: No
Luminescence:
UV Type |
Main color |
Intensity |
Observation Frequency |
|
| | | |
Short Waves (254 nm): | Green | Strong | | | | | |
Phosphorescence (in the common meaning of the term) seen by naked eye:
No Data
Comments:
I (Manuel Robbins) reported on a mineral from Mont Saint-Hilaire then known only under the temporary designation UK84. It has now been given the name Gaultite. It is a sodium zinc silicate hydrate. As reported in the book (see bibliography), fluorescence is bright green under SW. It was found as small colorless or mauve crystals to 0.05mm in a sodalite cavity at a contact between hornfels and sodalite syenite. (citation of Manuel Robbins)
Main Activator(s) and spectrum:
No data
Best Locality for luminescence(*):
- Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada;
(*)Data are not exhaustive and are limited to the most important localities for fluorescence
Bibliographical Reference for luminescence:
- Fluorescence: Gems and Minerals Under Ultraviolet Light, Manuel Robbins, 1994, Geoscience Press, ISBN 0-945005-13-X ,
Luminescence Reference on internet:
- Alkali-Nuts
- Am Min 80.
- Robbins
- MONT-SAINT-HILAIRE, History, Geology, Mineralogy, Laszlo HORVATH, The Canadian Mineralogist, Special Publication 14, 2019
Mineralogical Reference on internet:
http://www.mindat.org/show.php?name=Gaultite
http://webmineral.com/data/Gaultite.shtml
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