In June 2017, a casino worker and rock collector named Erik Rintamaki made an incredible discovery in Michigan.
He was so elated that he says his wife could probably hear him screaming from miles away.
Erik had no clue what type of mineral this was, so he made up a name for it: He called it a “Yooperlite,” after the nickname “Yoopers,” which refers to residents of certain areas of Michigan.
The rock is said to be sodalite gemstone — and it glows under a 365 nanometer UV light.
One day, Erik was leading a tour group along the coast of Lake Superior. The rock enthusiasts were on the hunt to find Yooperlites of their own and finally see them in person with their own eyes.
As Erik was filming, one of the group members, a woman named Shirley, spotted a colorful rock sitting among the rest. It was indeed a Yooperlite — but never in Erik’s wildest dreams did he think so many people would see his video.
In the awesome footage below, watch as Shirley finds the glowing rock for the first time.
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