What is Indiana Limestone?
Formed over 300 million years ago during the Mississippian geological epoch, Indiana limestone is from the stratigraphic formation known as Salem limestone. This limestone is comprised of over 97% calcium carbonate (CaCO3). It is characteristically a freestone, without pronounced cleavage planes, possessing remarkable uniformity of composition, texture, and structure. Indiana limestone has a high degree of machinability, allowing it to be shaped and textured at low cost. Over 150 years of successful use as an exterior cladding material has proven its ability to resist the forces of weather and pollution. Its light buff color blends easily with almost any other building material making it very practical for use as trim pieces in the form of sills, coping, quoins and keystones.
