Skull Yooperlite
"Yooperlite" is a type of rock found in Northern Michigan by a man named Erik Rintamaki on the beach of Lake Superior. He named the rock himself, however, the Michigan State University identified the rock scientifically as "syenite clasts containing fluorescent sodalite." The rocks have very recently gone viral because of the way they glow like molten lava when exposed to UV light.