These fluorescent rocks come from the Ilimaussaq Complex, Greenland, a remote and rugged area of mountains and fjords along the southern coast of the island.
Bright orange sodalite under longwave UV. 3"x3"x2"
The purple in the photo is reflection from the lamp.
This is orange sodalite, pink-red tugtapite, and a fluorescent green that could be natrolite or another uranium activated mineral. Shortwave UV. 3"x2"x1"
Tugtapite turns from pink to bright orange under longwave UV.
White light. The hints of purple are an example of tenebrescence, a phenomenon by which certain minerals show a change in color after exposure to UV light.
Specimens purchased from Polman Minerals.
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