National Minerals Information Center

Magnesium Compounds Statistics and Information

Magnesium (Mg) is the eighth most abundant element and constitutes about 2% of the Earth's crust, and it is the third most plentiful element dissolved in seawater.    Although magnesium is found in over 60 minerals, only dolomite, magnesite, brucite, carnallite, and olivine are of commercial importance.  Magnesium and other magnesium compounds are also produced from seawater, well and lake brines and bitterns.  Magnesium compounds, primarily magnesium oxide, are used mainly as refractory material in furnace linings for producing iron and steel, nonferrous metals, glass, and cement.   Magnesium oxide and other compounds also are used in agricultural, chemical, and construction industries.  

Statistics and information about magnesium metal are available separately.

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Adam Merrill

Mineral Commodity Specialist
National Minerals Information Center
Phone: 703-648-7715