Triboluminescence is phosphorescence that is triggered by mechanical action or electroluminescence excited by electricity generated by mechanical action. Some minerals glow when hit or scratched, as you can see by banging two quartz pebbles together in the dark.
The visible light emitted is often a secondary fluorescence effect, from electroluminescence in the ultraviolet.
Some comments from our Facebook Group: JB: Worth noting: if you want to try this at home, they have to be Wint-o-green lifesavers, not pep-o-mint. The oil of wintergreen (methyl salicylate) is fluorescent, and the sugar breaking produces UV light, causing the methyl...