Tozour Family's Fluorescent Rocks: Hackmanite, Kola Peninsula, Russia, Ten minute exposure to white light 10-12-98

HackmaniteKolaPeninsulaRussia5minWhiteLight10-12-98.html

Tenebrescence.html

HackmaniteKolaPeninsulaRussiaLongExposureDaylight9-28-99.html

Hackmanite, Kola Peninsula, Russia, Ten minute exposure to white light 10-12-98

Hackmanite, Kola Peninsula, Russia, Ten minute exposure to white light 10-12-98