Dolomite: A sedimentary rock known as dolostone or .
Physical Properties of Limestone. . This process may have a cost advantage over lime alone and the desired sludge characteristics of the limestone process. Holland, et al, found that with the proper combination of limestone and lime that a good effluent could be obtained even with ferrous AMD.Limestone is a carbonate sedimentary rock that is often composed of the skeletal fragments of marine organisms such as coral, foraminifera, and molluscs.Its major materials are the minerals calcite and aragonite, which are different crystal forms of calcium carbonate (CaCO 3).A closely related rock is dolomite, which contains a high percentage of the mineral dolomite, CaMg(CO 3) 2.