Magnesium

Primary Applications

Lightweight alloys, refractories, steelmaking, chemicals, die casting

Mining Significance

Magnesium is sourced from minerals such as magnesite and dolomite, from brines, and from seawater-derived resources. Depending on the feedstock and product, processing may involve calcination, chemical conversion, electrolysis, or thermal reduction. Magnesium-bearing minerals are also important in refractory products and metallurgical fluxes, while primary magnesium metal is valued for lightweight alloys.

Industries

None listed
12
Mg
Magnesium
24.31

Key Properties

  • Very light structural metal with low density.
  • Reactive alkaline-earth metal that forms a protective oxide film in air.
  • Burns with an intense white flame when finely divided or strongly heated.
  • Important alloying element for lightweight aluminum and magnesium alloys.
  • Abundant in carbonate minerals, silicates, brines, and seawater.