A Michigan man made the discovery of a lifetime when he stumbled on glowing rocks on the beaches of Lake Superior. Rintamaki, a gem and mineral dealer, made this discovery after hunting for rocks in Michigan's Upper Peninsula, bringing with him a black light. The black light helps illuminate the glowing rocks, which he says litter the Lake Superior beach. Rintamaki self-named the rocks "Yooperlites" in honor of the endearing nickname "Yooper" for people who live in Michigan's Upper Peninsula. The mineral sodalite will fluoresce under longwave ultraviolet illumination, creating the glowing yellowish orange veins of Yooperlites.

Source: Forbes September 17, 2018 15:22 UTC