Wernerite and Diopside - Grenville, Ontario, Canada

Contributed by: Mark Cole
Date: Apr 2nd, 2026
Locality: Grenville Scapolite prospect, Grenville-sur-la-Rouge, Argenteuil RCM, Laurentides, Québec, Canada (See on Mindat)

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

Fluorescence under shortwave UV light.

Fluorescence under longwave UV light.

Normal light.

Summary of luminescence responses:

Diopside (Mindat) (RRUFF)

• Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Blue

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