Polylithionite with Unknown - Greenland

Contributed by: Mark Cole
Date: Apr 8th, 2026
Locality: Kangerluarsuk Fjord, Ilímaussaq complex, Kujalleq, Greenland (See on Mindat)
Size: 2 x 1.5 x 4.5 inches
Weight: 6.5 oz

Description:
Bright yellow fluorescing polylithionite with an unusual violet/blue fluorescence from an unknown mineral. Gallery below shows other views and closeups.

Originally posted by Mark Cole on Nature's Rainbows in 2018.

Fluorescence under shortwave UV light.

Normal light.

Fluorescence under shortwave UV light. Closeup

Normal light. Closeup

Fluorescence under shortwave UV light. Side 2

Normal light. Side 2.

Summary of luminescence responses:

Polylithionite (Mindat) (RRUFF)

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