Sodalite - Ilímaussaq Complex, Greenland

Contributed by: FMS Admin
Date: Feb 21st, 2026
Locality: Ilímaussaq complex, Kujalleq, Greenland (See on Mindat)
Size: 38 x 24 x 46 mm

Description:
Colorless Greenland sodalite with bright orange LW fluorescence, red-orange SW fluorescence, and tenebrescent change to purple for several seconds after SW (all shown).

Originally posted by Dennis Michael on Nature's Rainbows.

Fluorescence under longwave UV light.

Fluorescence under shortwave UV light.

Normal light.

Tenebrescence after exposure to shortwave UV light.

Summary of luminescence responses:

Sodalite (Mindat) (RRUFF)

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