"Fantasy Rock" - Tugtupite, Sodalite, Analcime, Chkalovite
Contributed by: Mark Cole
Date: Mar 12th, 2026
Locality: Taseq Slope, Ilímaussaq complex, Kujalleq, Greenland (See on Mindat)
Size: 3.5 x 2.5 x 4 inches
Weight: 17.6 oz
Description:
The nickname "Fantasy Rock" encompasses a group of rocks found on the Taseq Slope in the Ilimaussaq Complex, Greenland and only in this one locality within the complex. A typical Fantasy Rock usually consists of four basic minerals: tugtupite, sodalite, chkalovite, and analcime and they are always the most color-rich pieces from this exotic, remote locale.
The sodalite in these rocks is almost always very tenebrescent.
Originally posted by Mark Cole on Nature's Rainbows.
Summary of luminescence responses:
Analcime (Mindat) (RRUFF)
- Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Blue
- Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Green
- Fluorescence under Longwave (365nm LED) UV light: Yellow
- Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Orange
- Tenebrescence after exposure to Shortwave (254nm Lamp/Mercury) UV light: Purple
- Fluorescence under Longwave (365nm LED) UV light: Yellow
- Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Red
- Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Green



