Database of luminescent Minerals


Chemical Formula:

Familly: Rock

Status: NON APPR

Mineral for Display: No


UV Type Main color Intensity Observation Frequency
Long Waves (365nm):      Orange

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

UV Type Color Intensity Observation Frequency
Long Wave (365nm): No data
Mid Waves (320 nm): No data
Short Waves (254 nm): No data


Tinguaite got its unusual name in honor of the province Sierra de Tingua which is located in South America.This is where the stone was first discovered.


Tinguaite or intrusive phonolite is a pale- to dark-green, very fine-grained igneous rock, variety of phonolite consisting of alkali feldspar, nepheline with or without other foids, aegirine and sometimes biotite. It is characterized by tinguaitic texture in which needles of aegirine occur interstitially in a mosaic of alkali feldspar and foids.


Tinguaites are alkali rocks. They form dykes that always belong to a nepheline syenite and are bound to volcanic areas within continental plates. Alkali rocks are rare. They contain so much potassium and especially sodium that they cannot be completely bound in the feldspars. As a result of this excess, foids also form. In this case it is mainly nepheline, which is usually found in the ground mass and can only be seen with the naked eye in exceptional cases. Aegirine is crucial for recognising a tinguaite: the black to dark green needles must be abundant. There is never quartz in a tinguaite.

Main Activator(s) and spectrum:

No data

Best Locality for luminescence(*):

(*)Data are not exhaustive and are limited to the most important localities for fluorescence

Bibliographical Reference for luminescence:

Luminescence Reference on internet:

Mineralogical Reference on internet:

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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.
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