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!

Fluorite and Calcite, Durham, England

Contributed by: FMS Admin
Date: Mar 8th, 2026
Locality: Weardale, County Durham, England, UK (See on Mindat)

Description:
From Weardale, Durham, UK, comes this lovely combo. Under midwave UV you get the fluorescence of both the fluorite and the calcite.

Source: Fluorescent Minerals Workgroup MKA : http://fluo.mineralogie.be/

Originally posted by Axel Emmermann on Nature's Rainbows.

Fluorescence under midwave UV light.
Fluorescence under midwave UV light.
Normal light.
Normal light.

Summary of luminescence responses:

Fluorite (Mindat) (RRUFF)

  • Fluorescence under Midwave (305nm LED) UV light: Blue
Calcite (Mindat) (RRUFF)
  • Fluorescence under Midwave (305nm LED) UV light: Red

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