One of my earliest memories was going to a summer program in the 1950′s with my family at a Green Lake, Wisconsin conference center. It must have been housed on an old estate because there were stone castle-like towers all over the place. Housed in a stone building, I remember seeing a display of florescent rocks. Under ordinary lighting, the rocks were quite common looking. Then with the flick of a switch, a black light was turned on and the rocks glowed in amazing colors. I was entranced! This began my life long attraction to the mineral kingdom.
Crystals, Rocks, and Minerals Posts