Root Beer Fluorite Cube with Celestine, Stoneco White Rock Quarry, Clay Center, Ohio

Contributed by: Chris Clemens
minID: DTL-PL7
Date: Apr 25th, 2026
Locality: Stoneco White Rock Quarry, Clay Center, Allen Township, Ottawa County, Ohio, USA (See on Mindat)
Size: 37 x 34 x 37 mm

Description:
A single, large, root beer-colored fluorite cube with minor translucent celestine, from the Stoneco White Rock Quarry, Clay Center, Ottawa Co., Ohio. The fluorite shows a strong white zonal fluorescent response with phosphorescence under longwave UV, characteristic of fluorite from the Clay Center, Ohio, location. The celestine fluoresces dim purple under longwave UV. The fluorite shows a blue/white response with phosphorescence under shortwave UV. The fluorescence in the Clay Center fluorites is likely due to the presence of an organic activator.

Originally posted by Chris Clemens on Nature's Rainbows in 2016.

Fluorescence under longwave UV light.

Fluorescence under shortwave UV light.

Normal light.

Normal light. Side 2.

Fluorescence under longwave UV light. Side 2.

Fluorescence under shortwave UV light. Side 2

Summary of luminescence responses:

Fluorite (Mindat) (RRUFF)

• Fluorescence under Longwave (365nm LED) UV light: White
• Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Blue