What is the state's official mineral?

Michigan's official mineral is calcite, which is a significant component of the state's geological makeup. Calcite is primarily found in limestone, an abundant rock in Michigan due to the extensive limestone formations present throughout the Lower Peninsula. Limestone has played a crucial role in Michigan's economy through the production of cement and as a construction material. Additionally, this mineral is known for its distinctive rhombohedral crystal structure and its wide range of colors, although it is most commonly associated with a clear or white appearance.

In the context of Michigan, calcite is particularly noted for its occurrence in the state's many caves and geological features, including the famous Mackinac Island and the limestone cliffs along Lake Huron. The selection of calcite as the official mineral reflects not only its geological significance in the region but also its importance in Michigan's natural beauty and economic resources.