Aragonite - Kettle Falls, Washington

Contributed by: Mark Cole
Date: Mar 16th, 2026
Locality: Kettle Falls Mining District, Stevens County, Washington, USA (See on Mindat)

Description:
Originally posted by Mark Cole on Nature's Rainbows in 2015.

Fluorescence under longwave UV light.

Afterglow after exposure to longwave UV light.

Fluorescence under midwave UV light.

Fluorescence under shortwave UV light.

Normal light.

Summary of luminescence responses:

Aragonite (Mindat) (RRUFF)

• Fluorescence under Longwave (365nm LED) UV light: White
• Afterglow after exposure to Longwave (365nm LED) UV light: Green
• Fluorescence under Midwave (305nm Lamp/Mercury) UV light: Yellow
• Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: White