These fluorescent rocks abound on the shores of Lake Superior

Certain forms of the igneous rock syenite are nicknamed emberlite because they contain sodalite, causing them to fluoresce under black light. Glaciers deposited lots of them in the Lake Superior basin, where rock hunters go out at night to find them.… Read the rest

from Boing Boing https://ift.tt/33T0vms
via IFTTT

Share on Google Plus

About Unknown

This is a short description in the author block about the author. You edit it by entering text in the "Biographical Info" field in the user admin panel.