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!

Chondrodite, Calcite, Diopside, Aragonite - Long Lake Zinc Mine "Layer Cake"

Contributed by: Mark Cole
Date: Mar 29th, 2026
Locality: Long Lake Zinc Mine (Richardson Zinc Mine; Lynx Mine), Olden Township, Frontenac County, Ontario, Canada (See on Mindat)

Description:
Originally posted by Mark Cole on Nature's Rainbows in 2015.

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

Summary of luminescence responses:

Calcite (Mindat) (RRUFF)

  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Red
Chondrodite (Mindat) (RRUFF)
  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Yellow
Diopside (Mindat) (RRUFF)
  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Blue

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