Tozour Family's Fluorescent Rocks: Hackmanite, Davis Quarry, Bancroft, Ontario, Darker purple spots after five minutes exposure to SW UV

HackmaniteDavisQuarryBancroftOntario1minSWUV.html

TugtupiteGreenlandlongexposurewhitelight.html

Hackmanite, Davis Quarry, Bancroft, Ontario, Darker purple spots after five minutes exposure to SW UV