Missouri Limestone Missouri Department of Natural Resources
Commodity: Limestone, ... (Ca) and tons elemental magnesium metal (Mg). Also, the calcination (that is, the burning) of this same 100 tons of limestone would produce tons of carbon dioxide gas (formula CO2). ... Toxicity: Calcite and dolomite, which are the primary minerals that make up limestone, are nontoxic. However, quicklime ...