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 Celestine - Stoneco Quarry, Lime City, Ohio

Contributed by: Chris Clemens
Date: Apr 28th, 2026
Locality: Stoneco Lime City Quarry, Lime City, Wood County, Ohio, USA (See on Mindat)
Size: 29 x 28 x 48 mm

Description:
This beautiful fluorescent specimen from the Midwest features a prominent doubly terminated calcite crystal on a limestone matrix, surrounded by numerous smaller crystals of calcite and celestine. The main calcite crystal is about 13mm in length. This specimen shows a similar bright fluorescent response under both shortwave and longwave UV light, with the celestine and calcite showing bright blue/white fluorescence with blue/green (SW) and green (LW) phosphorescence. The limestone matrix fluoresces a dimmer cream/yellow color and provides a lovely contrasting background to the more brightly fluorescent minerals.

The Stoneco Quarry in Lime City, Wood County, Ohio, has been a prolific producer of fine fluorescent specimens consisting of combinations of calcite, celestine and strontianite.

Originally posted by Chris Clemens on Nature's Rainbows in 2017.

Fluorescence under shortwave UV light.
Fluorescence under shortwave UV light.
Afterglow after exposure to shortwave UV light.
Afterglow after exposure to shortwave UV light.
Fluorescence under longwave UV light.
Fluorescence under longwave UV light.
Afterglow after exposure to longwave UV light.
Afterglow after exposure to longwave UV light.
Normal light.
Normal light.
Normal light. Closeup
Normal light. Closeup
Fluorescence under shortwave UV light. Closeup
Fluorescence under shortwave UV light. Closeup
Afterglow after exposure to shortwave UV light. Closeup
Afterglow after exposure to shortwave UV light. Closeup
Fluorescence under longwave UV light. Closeup
Fluorescence under longwave UV light. Closeup
Afterglow after exposure to longwave UV light. Closeup
Afterglow after exposure to longwave UV light. Closeup

Summary of luminescence responses:

Calcite (Mindat) (RRUFF)

  • Fluorescence under Longwave (365nm LED) UV light: White
  • Afterglow after exposure to Longwave (365nm LED) UV light: Green
  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: White
  • Afterglow after exposure to Shortwave (254nm Lamp/Mercury) UV light: Blue