Blue Sodalite var. Hackmanite from Greenland

Contributed by: Mark Cole
Date: Apr 15th, 2026
Locality: Ilímaussaq complex, Kujalleq, Greenland (See on Mindat)

Description:
Ilimaussaq Complex. Sodalite on lujavrite - green fluorescence is uranyl activated.

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

Fluorescence under shortwave UV light.

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