Dolomite is an anhydrous carbonate mineral composed of calcium magnesium carbonate, ideally CaMg(CO3)2. The applications of Dolomite include: Limestone Alternative. Aggregate for both cement and bitumen mixes. Flux in blast furnaces. Specification: Dolomite Fertilizer CaO: 30% MgO: 20.2% Fineness Level 100 Mesh: 95.16 Water Content: 0.51%