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

HOUGHTON, MI – There’s a new, easy way to experience one of Michigan’s natural treasures. Yooperlites, sodalite-bearing syenites that possess fluorescent properties, are now on display in the Upper ...

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 ...

CHIPPEWA COUNTY, Mich. (WPBN/WGTU) -- A man in the U.P. is being credited with discovering a new kind of rock in Michigan and they're making a splash. Erik Rintamaki has been a self proclaimed "rock ...

Innocuous rocks in regular light become something special when lit by ultraviolet rays. The rocks were part of the third annual Sample's Agate Gem and Mineral Shop's Agate Show Saturday, Jan. 5, at ...