KALAMAZOO, Mich. — Although building sandcastles and jumping over the waves of the Great Lakes may be a blast, exploring Michigan's shores for ridiculously cool rocks has become a popular beachside ...

These gray rocks don’t look like much until you shine UV light on them. Suddenly you’ll see the fluorescent sodalite in them light up orange and yellow. Not all sodalite glows, but Yooperlites are ...

If you've ever blackened your toes while walking on a Michigan beach, you've tracked through magnetite. What to know about the mineral.

Comb Leland’s beaches for pieces of colorful lake-tumbled slag, locally and affectionately known as Leland Blue stones. Dive in to learn how they were created, the best times to rock hunt and Michigan ...