Fluorite and Calcite - 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: 57 x 41 x 64 mm
Weight: 143 g
Description:
This is an exceptionally bright fluorescent specimen of amber-colored fluorite cubes on a bed of micro calcite crystals, on limestone matrix, from the Stoneco Quarry (Maumee Stone Quarry), Lime City, Wood County, Ohio. Under shortwave UV the fluorite shows a bright white response with bright and long-lasting white phosphorescence, while the calcite fluoresces a cooler blue/white color. Under MW and LW the fluorescence is warmer and even brighter, with green/yellow phosphorescence. Even the limestone matrix is fluorescent on this piece. Yes, high quality fluorescent specimens can be found in the Midwest!
Originally posted by Chris Clemens on Nature's Rainbows in 2017.
Summary of luminescence responses:
Calcite (Mindat) (RRUFF)
- Fluorescence under Longwave (365nm LED) UV light: Blue
- Afterglow after exposure to Longwave (365nm LED) UV light: Green
- Fluorescence under Midwave (305nm Lamp/Mercury) UV light: Blue
- Afterglow after exposure to Midwave (305nm Lamp/Mercury) UV light: Blue
- Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: White
- Afterglow after exposure to Shortwave (254nm Lamp/Mercury) UV light: White
- Fluorescence under Longwave (365nm LED) UV light: White
- Fluorescence under Midwave (305nm Lamp/Mercury) UV light: White
- Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: White
- Afterglow after exposure to Longwave (365nm LED) UV light: Green
- Afterglow after exposure to Midwave (305nm Lamp/Mercury) UV light: Green
- Afterglow after exposure to Shortwave (254nm Lamp/Mercury) UV light: Blue