Aragonite - Kettle Falls, Washington

Contributed by: Mark Cole
Date: Apr 4th, 2026
Locality: Kettle Falls Mining District, Stevens County, Washington, USA (See on Mindat)

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

Fluorescence under shortwave UV light.

Afterglow after exposure to shortwave UV light.

Normal light.

Summary of luminescence responses:

Aragonite (Mindat) (RRUFF)

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