Biddle North of Eureka

Historical marker location:

3200 Biddle Avenue, Wyandotte, Michigan

( Marker is on Biddle Avenue near Sycamore Street, on the left when traveling north.)

Wyandotte, Michigan. The Museum in the Streets.

Michigan is the only state to have two designated "state stones": the Petoskey Stone, which is the state stone of Michigan, and the Isle Royale Greenstone, which is the state gemstone of Michigan. The Petoskey Stone is a fossilized coral that is found primarily in the northern Lower Peninsula, while the Isle Royale Greenstone is a rare mineral found only on Isle Royale in Lake Superior.