The Great Lakes, the largest freshwater system in the world, are home to a diverse geological makeup spanning hundreds of millions of years. While many head to the planet's largest freshwater body of ...

The best time to seek Yooperlites and other stones is after a storm, when waves have disrupted and uncovered new rocks.

“Fluorescent sodalite-bearing syenite” is a mouthful, but these glowing rocks from the U.P. are also known as Yooperlite. Credit: Courtesy photo The 77th Greater Detroit Gem, Mineral & Fossil Show is ...

Add Yahoo as a preferred source to see more of our stories on Google. Most people do their rock hunting during the day, but you can't find "Yooperlites" until the sun goes down. Yooperlites are rocks ...

Bryan the Crystal Collector along with Erik from yooperlites.com set out on a private dig and a public tour on Lake Superior ...

Erik Rintamaki, 43, of Brimley, considers himself an amateur rock hound who has been on a wild ride, all because of some beautiful fluorescent specimens. Rintamaki said he was out on a Lake Superior ...

Add Yahoo as a preferred source to see more of our stories on Google. Named for the state's Upper Peninsula (whose residents are known as "Yoopers"), these seemingly nondescript gray stones glow ...