Mary Ellen Jasper Stromatolites

Mary Ellen Jasper is a beautiful material that comes from Northern Minnesota. It was first discovered in the Mary Ellen Iron Mine in St. Louis County, Minnesota. This sub variety of jasper is know to have stromatolite fossils along with layers of hematite and quartz creating striking patterns of red, black, grays, and white. It is found in the Biwabik iron formation and is about 2 billion years old.