Tugtupite and Chkalovite, in Ussingite - Ilimaussaq Complex, Greenland

Contributed by: Mark Cole
Date: Apr 4th, 2026
Locality: Ilímaussaq complex, Kujalleq, Greenland (See on Mindat)

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

Fluorescence under shortwave UV light.

Normal light.

Summary of luminescence responses:

Chkalovite (Mindat) (RRUFF)

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

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