Most people do their rock hunting during the day, but you can't find "Yooperlites" until the sun goes down. Yooperlites are rocks that fluoresce in the dark under ultraviolet light. They became known ...

Most people do their rock hunting during the day, but you can't find "Yooperlites" until the sun goes down. Yooperlites are rocks that fluoresce in the dark under ultraviolet light. They became known ...

MICHIGAN — Erik Rintamaki was searching for rocks on a Michigan beach last summer when he made what he calls a “mind-blowing” discovery. Resting among the thousands of pebbles covering the Lake ...

BRIMLEY, Mich. (AP) — Two Michigan men are in conflict over recently discovered glowing rocks in the Upper Peninsula. Erik Rintamaki is credited with finding the sodalite-rich syenite rocks in 2017 on ...

An error has occurred. Please try again. With a The Portland Press Herald subscription, you can gift 5 articles each month. It looks like you do not have any active ...

Leland, Mich. – What is dismissed in the daylight is considered treasure when the sun sets. While some hunt for the well-known, others know of a different prize that can only be found under the glow ...

LEELANAU COUNTY, Mich. (WPBN/WGTU) -- A group dedicated to combing area beaches for rocks discovered a fluorescent treasure on a beach in Leland. Leland's history has beach combers searching for the ...

In 2017, gem and mineral dealer Erik Rintamaki stumbled upon glowing rocks along a beach near Lake Superior. The rocks, which looked normal at first, fluoresced brilliantly underneath UV ...

BRIMLEY, Mich. – Two Michigan men are in conflict over recently discovered glowing rocks in the Upper Peninsula. Erik Rintamaki is credited with discovering the sodalite-rich syenite rocks in 2017 ...

Discover why rock hunting at night in Michigan is an unforgettable experience as UV light reveals hidden fluorescent treasures in ordinary-looking stones. This nighttime adventure uncovers glowing ...

BRIMLEY, Mich. (AP) - Two Michigan men are in conflict over recently discovered glowing rocks in the Upper Peninsula. Erik Rintamaki is credited with finding the sodalite-rich syenite rocks in 2017 on ...