Leucophanite with Tugtupite – Ilimaussaq Complex, Greenland
Contributed by: Mark Cole
Date: Apr 9th, 2026
Locality: Kuannersuit Plateau (Kvanefjeld), Ilímaussaq complex, Kujalleq, Greenland (See on Mindat)
Size: 3 x 2 x 3.5 inches
Weight: 15.3 oz
Description:
Leucophanite is only found in a few places around the world - most notably Norway, Canada (Mt. St. Hilaire (MSH)), and Greenland. It is quite rare in Greenland. This piece comes from Kvanefjeld in the Ilimaussaq Complex. It responds best to midwave UV light. The gallery below shows the MW, SW and LW responses.
Originally posted by Mark Cole on Nature's Rainbows in 2018.
Summary of luminescence responses:
Leucophanite (Mindat) (RRUFF)
- Fluorescence under Midwave (305nm Lamp/Mercury) UV light: Pink
- Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Pink
- Fluorescence under Longwave (365nm LED) UV light: Orange
- Fluorescence under Midwave (305nm Lamp/Mercury) UV light: Red
- Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Red