Fluorescent Mineral Database

Aragonite, Chondrodite, Diopside from the Long Lake Zinc Mine in Canada

Contributed by: Mark Cole
Date: Mar 11th, 2026
Locality: Long Lake Zinc Mine (Richardson Zinc Mine; Lynx Mine), Olden Township, Frontenac County, Ontario, Canada (See on Mindat)
Size: 4 x 3 x 6 inches
Weight: 3.6 lb

Description:
A nice piece with aragonite "lightening" with chondrodite, diopside, and some muted calcite. Shortwave both sides.

SW fluorescent pictures were taken at ISO-100, f/18.6 for 6 seconds.

Originally posted by Mark Cole on Nature's Rainbows.

Fluorescence under shortwave UV light.
Fluorescence under shortwave UV light.
Normal light.
Normal light.
Fluorescence under shortwave UV light.  Side 2
Fluorescence under shortwave UV light. Side 2

Summary of luminescence responses:

Aragonite (Mindat) (RRUFF)

  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Blue
Chondrodite (Mindat) (RRUFF)
  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Yellow
Diopside (Mindat) (RRUFF)
  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Blue