State rock

The useful and attractive calcium carbonate, commonly known as limestone, is hereby designated as the official state rock. Acts 1979, ch. 42, § 1; T.C.A., § 4-128. The useful and attractive calcium carbonate, commonly known as limestone, is hereby designated as the official state rock. Acts 1979, ch. 42, § 1; T.C.A., § 4-128.