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!

Willemite and Calcite - Alexander Mine, Czech Republic

Contributed by: Mark Cole
Date: Mar 31st, 2026
Locality: Alexander Mine, Vran?ice, P?íbram District, Central Bohemian Region, Czech Republic (See on Mindat)

Description:
The specimen was extracted from the Pošepný vein.

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

Fluorescence under shortwave UV light.
Fluorescence under shortwave UV light.

Summary of luminescence responses:

Willemite (Mindat) (RRUFF)

  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Green
Calcite (Mindat) (RRUFF)
  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Red

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