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This is the material that put Greenland on the fluorescent mineral map. (First find sodalite) – we discovered this deposit in 2002 on our first visit. Greenland has always been known for tugtupite but this material was the reason for our first visit to this remote locale.
The area of green fluorescence (SW) is a uranyl activated mineral, likely analcime. The black areas are mostly arfvedsonite and aegirine.
A major component of rock collecting (for us) is simply getting out in nature. A buddy dragged us out to a very remote area here in middle Tennessee to hunt for fluorescent green agate. Since we consider ourselves pure "Glow Hounds" we weren't anticipating any glow rocks, just the beauty of the area, but we brought our UV lights anyway.
