Tozour Family's Fluorescent Rocks: Hackmanite, Kola Peninsula, Russia, 15 additional minutes UV in dark room (30 minutes total of SW UV) 9-28-99

HackmaniteKolaPeninsulaRussia15minSWUV9-28-99.html

HackmaniteDavisQuarryBancroftOntariobeforeUV.html

Hackmanite, Kola Peninsula, Russia, 15 additional minutes UV in dark room (30 minutes total of SW UV) 9-28-99