Magnesium ores /mæɡˈniːziəm ɔrz/ – natural mineral formations from which it is economically feasible and technically possible to extract metallic magnesium, its oxide and other magnesium compounds.
Ex. Every engineer of miningindustry should be aware of the importance of studying the processes of mining and beneficiation of magnesium ores, since these materials play a key role in the production of metals and alloys with a wide range of industrial applications.