"Fire" Tugtupite from Greenland - simply the brightest
Contributed by: Mark Cole
Date: Apr 6th, 2026
Locality: Ilímaussaq complex, Kujalleq, Greenland (See on Mindat)
Size: 4 inches
Description:
Tugtupite from Greenland is a bright, rich fluorescent mineral. The fluorescence is quite varied depending on which locality it is found. Some pieces are a bright cherry red, others pink, peach, white, or an almost purple color. Bright red is the most commonly found within the Ilimaussaq Complex and this variety is the brightest of them all. We nicknamed it "Fire Tugtupite". Interestingly, these pieces show a subdued response under MW and LW. They also do not exhibit any significant tenebrescence. The green fluorescence is chkalovite.
Originally posted by Mark Cole on Nature's Rainbows in 2016.
Summary of luminescence responses:
Chkalovite (Mindat) (RRUFF)
- Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Green
- Fluorescence under Longwave (365nm LED) UV light: Orange
- Fluorescence under Midwave (305nm Lamp/Mercury) UV light: Orange
- Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Red