These words are related to Fluorescence. Fluorescent minerals are beautiful when viewed under ultraviolet light. Here is a link to some of these specimens: http://users.ece.gatech.edu/~hamblen/uvminerals/
Fluorescent minerals respond to ultraviolet light by producing a wide variety of colors in visible light. Ultraviolet light is invisible to the human eye. Only a small fraction of minerals are fluorescent. Small amounts of impurities called activators are required for many minerals to fluoresce. Different activators can produce different colors in the same mineral.
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