Kasota limestone or simply,Kasota stone, also calledMankato stone, is adolomitic limestone found in southernMinnesota, especially near theMinnesota River and its tributaries. Thissedimentary rock is part of theOneota Dolomite of southern Minnesota and is approximately 450 million years old (lowerOrdovician Period). This particular limestone is rich indolomite andmagnesium, making it resistant to weathering, and it is thus widely used as abuilding material. Its name is taken fromKasota Township where the stone has been quarried.
Minnesota State University, Mankato, most of the buildings on the original Wilson campus (Main in 1869) and the Highland campus, including the new campus signs, Preska and Sears Halls.
"Kasota Building" Minneapolis (Gateway District). The building was demolished in an Urban Renewal act during the late 1950s.