Yooperlites are a variety of sodalite-rich syenite found in the Upper Peninsula of Michigan.

SOUTH HAVEN, MI -- Lake Michigan’s beaches are filled with colorful rocks, beach glass and intricate fossils from different eras of the lake’s 1.2 billion year history. Because of that ...

In Michigan and Minnesota, these agates can be found along the shores of Lake Superior. This unique rock is a conglomerate that metamorphosed into quartzite, and got its name because it looked ...

Between ice breaking tug boats, massive cranes and large barges, there's a lot happening off Jones Island in Lake Michigan this winter ... is filled with sand and rocks, similar to gravel material ...

It's kind of like a tango ... sinkholes form when water dissolves rock, causing the surface layer to collapse and form a hole. Lake Michigan sits on a layer of limestone bedrock.

CHICAGO (CBS) -- If you regularly visit Lake Michigan ... "This was kind of a small beach." A not-too-distant memory for Meg Rhem. "If you look at where the rocks are the beach was out in the ...

There are roughly five classes of Yooperlites: The rocks can be found in different areas throughout Michigan, but are most likely to be found in the Upper Peninsula along Lake Superior ...