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, Minerva No.1 Mine - Hardin County, Illinois

Contributed by: Mark Cole
Date: Apr 7th, 2026
Locality: Minerva No. 1 Mine, Ozark-Mahoning group, Cave-In-Rock Mining Sub-District, Hardin County, Illinois, USA (See on Mindat)

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

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

Summary of luminescence responses:

Fluorite (Mindat) (RRUFF)

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

FMDB Home Page
Submit a new specimen!
My Collection