Database of luminescent Minerals

GAULTITE

Chemical Formula: Na₄[Zn₂Si₇O₁₈] 5H₂O

Familly: Silicates

Status: IMA-A

Crystal System: Orthorhombic

Mineral for Display: No

Luminescence:

Phosphorescence (in the common meaning of the term) seen by naked eye:

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:

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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