Agrellite, with Albite and Uranyl-Activated Green Fluorescence from Kipawa, Quebec, Canada

Contributed by: FMS Admin
Date: May 14th, 2026
Locality: Kipawa alkaline complex, Les Lacs-du-Témiscamingue, Témiscamingue RCM, Abitibi-Témiscamingue, Québec, Canada (See on Mindat)
Size: 8.1 x 3.4 x 14.7 cm

Description:
Nice three colors combo from the famous Kipawa Alkaline Complex in Western Quebec, Canada.

I like how well balanced the colors are on this specimen; dull red shortwave UV fluorescing albite is present in the lower portion; brightly fluorescing agrellite (quite bright under shortwave, best under midwave, and dull orange under longwave) is concentrated in the upper portion, and uranyl-activated green fluorescence is spread roughly in the center. Generous amounts of gemmy red eudialyte make this specimen look pretty nice in visible light too. Moderately radioactive beige colored thorite is present on the specimen.

Originally posted by Frédéric Messier Leroux on Nature's Rainbows in 2021.

Fluorescence under shortwave UV light.

Fluorescence under midwave UV light.

Fluorescence under longwave UV light.

Normal light.

Summary of luminescence responses:

Agrellite (Mindat) (RRUFF)

• Fluorescence under Longwave (365nm LED) UV light: Orange
• Fluorescence under Midwave (305nm LED) UV light: Pink
• Fluorescence under Shortwave (255nm LED) UV light: Pink

• Fluorescence under Shortwave (255nm LED) UV light: Red