Tugtupite and Chkalovite - Multi-wavelength Response and very Phosphorescent - Greenland

Contributed by: Mark Cole
Date: Mar 26th, 2026
Locality: Kangerluarsuk Fjord, Ilímaussaq complex, Kujalleq, Greenland (See on Mindat)

Description:
Originally posted by Mark Cole on Nature's Rainbows in 2015.

Fluorescence under shortwave UV light.

Fluorescence under midwave UV light.

Fluorescence under longwave UV light.

Afterglow after exposure to shortwave UV light.

Tenebrescence after exposure to shortwave UV light.

Normal light.

Summary of luminescence responses:

Chkalovite (Mindat) (RRUFF)

• Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Green

• Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Red
• Fluorescence under Midwave (305nm Lamp/Mercury) UV light: Pink
• Fluorescence under Longwave (365nm LED) UV light: Orange
• Afterglow after exposure to Shortwave (254nm Lamp/Mercury) UV light: White
• Tenebrescence after exposure to Shortwave (254nm Lamp/Mercury) UV light: Purple