6-Color "Fantasy Rock" - Taseq Slope, Ilimaussaq Complex, Greenland

Contributed by: Mark Cole
Date: Apr 11th, 2026
Locality: Taseq Slope, Ilímaussaq complex, Kujalleq, Greenland (See on Mindat)
Size: 3 x 2.5 x 4 inches
Weight: 16.4 oz

Description:
"Fantasy Rock" is a nickname given to an exotic combination of highly fluorescent minerals. We are still finding mysteries in the wide assortment of fluorescent minerals from Greenland. This piece has two nodules of radiating natrolite which are quite rare to find on their own, but below one is a new fluorescent mineral (albeit small) that I\'ve not seen before.

The main minerals on this piece are tugtupite (cherry red SW) forming eyes around chkalovite (magenta to white), sodalite (orange), analcime (blue), and the natrolite (green).

The first picture is a shortwave shot of the entire rock. Other pictures of the entire rock show a longwave view, a view of the sodalite tenebrescence and a white light view. Closeups below show the natrolite nodules and an enlargement of the area of unknown fluorescent mineral.

Originally posted by Mark Cole on Nature's Rainbows in 2017.