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!

Tugtupite Crystals, on Analcime - Greenland

Contributed by: Mark Cole
Date: Apr 3rd, 2026
Locality: Ilímaussaq complex, Kujalleq, Greenland (See on Mindat)

Description:
Just about as rare as hen\'s teeth... These crystals fluoresce the typical bright cherry red that tugtupite is famous for, and are rarely found in any size, but they are among the world's finest (and only). Shown tenebrescent...

Originally posted by Mark Cole on Nature's Rainbows in 2016.

Tenebrescence after exposure to shortwave UV light.
Tenebrescence after exposure to shortwave UV light.
Tenebrescence after exposure to shortwave UV light. Closeup.
Tenebrescence after exposure to shortwave UV light. Closeup.

Summary of luminescence responses:

Tugtupite (Mindat) (RRUFF)

  • Tenebrescence after exposure to Shortwave (254nm Lamp/Mercury) UV light: Red

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