Fluorescent Mineral Database

A new secret project! Trying to create a nice Fluorescent Mineral Database (FMDB), which would be searchable by mineral, locality, and luminescence properties. Also making it easy for people to contribute with their own specimens!

Greenland Fantasy Rock - Tugtupite, Sodalite, Analcime, Chkalovite

Contributed by: Mark Cole
Date: Apr 13th, 2026
Locality: Taseq Slope, Ilímaussaq complex, Kujalleq, Greenland (See on Mindat)
Size: 4 x 3 x 6 inches
Weight: 2.09 lb

Description:
Fantasy Rock is a nickname we came up with for wildly fluorescent combination specimens from the Taseq Slope in Ilimaussaq, Greenland. On this piece the analcime (bright blue/white) dominates, with cherry red fluorescing tugtupite sprinkled around, some of it encircling a magenta fluorescing chkalovite. A few areas of orange sodalite round out the assemblage. Both sides are shown in the pictures below under SW. One side is shown under LW and white light.

Originally posted by Mark Cole on Nature's Rainbows in 2017.

Fluorescence under shortwave UV light.
Fluorescence under shortwave UV light.
Fluorescence under longwave UV light. Side 2.
Fluorescence under longwave UV light. Side 2.
Normal light. Side 2.
Normal light. Side 2.
Fluorescence under shortwave UV light. Side 2
Fluorescence under shortwave UV light. Side 2

Summary of luminescence responses:

Tugtupite (Mindat) (RRUFF)

  • Fluorescence under Longwave (365nm LED) UV light: Orange
  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Red
Analcime (Mindat) (RRUFF)
  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Blue
Chkalovite (Mindat) (RRUFF)
  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: White

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