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!

Botryoidal Hydrozincite from Spain

Contributed by: Mark Cole
Date: Mar 10th, 2026
Locality: Reocín Mine, Reocín, Cantabria, Spain (See on Mindat)
Size: 2 x 1.5 x 2.5 inches
Weight: 1.4 oz

Description:
The Reocín deposit in Cantabria Province consists of primary sulfide ore and was one of Europe’s largest zinc mining operations. Hydrozincite in this form is a very bright fluorescent - will light up any corner of a dark display. Shown under shortwave and natural.

Originally posted by Mark Cole on Nature's Rainbows.

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

Summary of luminescence responses:

Hydrozincite (Mindat) (RRUFF)

  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Blue

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