Limestone By Essel Minerals Industries

Limestone Limestone is calcareous sedimentary rock composed of the mineral calcite (CaCO3), which upon calcination yields lime (CaO) for commercial use. The main source of limestone is the limy ooze formed in the ocean. Limestone can easily be dissolved by acids. The rock containing more than 95% of calcium carbonate is termed high-calcium limestone. Recrystallised limestone takes good polish and is used as decorative and building stone. It is then called 'marble'. Analysis report of limestone Constituents Symbol % age Silica SiO2 0.14% Iron Fe2O3 0.11% Alumina Al2O3 0.25% Calcium CaO 54.22% Magnesium MgO 1.41% Loss on Ignition 43.76% Alkalies 0.10% Acid insoluble in HCl 0.15% Calcium as CaCO3 96.82% Magnesium as MgCO3 2.95%