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!

Calcite and Hydrozincite - Hurricane, Utah

Contributed by: Mark Cole
Date: Apr 3rd, 2026
Locality: Washington County, Utah, USA (See on Mindat)

Description:
Bright two-color specimen, unique yellow response under MW.

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

Fluorescence under shortwave UV light.
Fluorescence under shortwave UV light.
Fluorescence under midwave UV light.
Fluorescence under midwave UV light.
Normal light.
Normal light.
Normal light. Specimen size image compared to a US dollar bill.
Normal light. Specimen size image compared to a US dollar bill.

Summary of luminescence responses:

Calcite (Mindat) (RRUFF)

  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Red
  • Fluorescence under Midwave (305nm Lamp/Mercury) UV light: Yellow
Hydrozincite (Mindat) (RRUFF)
  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Blue

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