Sodalite and Ussingite, with Very Phosphorescent Unknown Mineral - Tunuliarfik, Greenland

Contributed by: Mark Cole
Date: Apr 3rd, 2026
Locality: Tunulliarfik Fjord, Ilímaussaq complex, Kujalleq, Greenland (See on Mindat)

Description:
Originally posted by Mark Cole on Nature's Rainbows in 2016.

Fluorescence under shortwave UV light.

Fluorescence under longwave UV light.

Afterglow after exposure to shortwave UV light.

Tenebrescence after exposure to shortwave UV light.

Normal light.

Normal light. Specimen size image compared to a US dollar bill.

Summary of luminescence responses:

Sodalite (Mindat) (RRUFF)

• Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Orange
• Fluorescence under Longwave (365nm LED) UV light: Orange
• Tenebrescence after exposure to Shortwave (254nm Lamp/Mercury) UV light: Purple