rocks composed principally of the mineral dolomite (calcium magnesium carbonate) . also may be used to neutralize other types of acid industrial wastes. . clay lumps is 1.0 percent in fine aggregate for portland cement concrete and 0.25.
Dolomite is an anhydrous carbonate mineral composed of calcium magnesium carbonate, Large quantities of processed dolomite are used in the production of float glass. In horticulture, dolomite and dolomitic limestone are added to soils