Which among the following ores is a magnesium ore?
Cassiterite
Carnallite
Dolomite
Argen
Magnesium is an alkaline earth metal which does not occur in the elemental form but is present in various rocks and minerals in the form of dolomite, magnesite and carnallite.
Carnallite is magnesium ore.
Cassiterite is an oxide ore of tin.
Fluorspar is halide ore of Calcium
Argen is an ore of Silver.