We can add another Michigan discovery to the list related to the oldest rock in America! That's right, this particular rock ...

Geologists recently dated the age of Watersmeet gneiss, a type of rock in the Upper Peninsula, as the oldest in the U.S. Here ...

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

The best time to find agates in Michigan is after a storm. Popular Michigan agate hunting locations include Whitefish Point, ...

In a recent study, geologists say Michigan is home to the oldest known rock in the nation. Watersmeet gneiss is found in Michigan's Upper Peninsula. Minnesota's Morton gneiss previously held the ...

The best time to find agates in Michigan ... who said she found her favorite agate in Grand Marais, encourages collectors not to get discouraged when the outside of the rock has a dull, waxy ...