Tozour Family's Fluorescent Rocks: Hackmanite, Kola Peninsula, Russia, 15 minutes of SW UV with room lights on 9-28-99

HackmaniteKolaPeninsulaRussiaLongExposureDaylight9-28-99.html

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HackmaniteKolaPeninsulaRussia30minSWUV9-28-99.html

Hackmanite, Kola Peninsula, Russia, 15 minutes of SW UV with room lights on 9-28-99

Hackmanite, Kola Peninsula, Russia, 15 minutes of SW UV with room lights on 9-28-99