Calcium Carbonate (CaCO3): 92%
Calcium Oxide (CaO): 51.52%
Calcium (Ca): 36.8%
Iron Oxide (Fe2O3):
Supplier: Gypsum rocks, gypsum powder, rock salt (industrial salt and deicing salt), food grade salt, sodium bicarbonate, limestone, white limestone (marble chips), sulphur (granular, lumps)