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Minerals exhibit triboluminescence

Emit light by rubbing, cleaving, or crushing.

• Dolomite

• Fluorite

• Magnesite (Some examples)
• Muscovite (Yellow, by cleaving)

• Pectolite
• Polylithionite (Reddish purple, by cleaving)

• Quartz

• Trilithionite (Reddish purple, by cleaving)