Quantification of the total magnet content in samples of minerals or other compounds. The analyses are carried out by magnetic separation, using magnets with high magnetic induction until the magnets are completely separated from the samples. The analyses are carried out with the sample previously ground and dispersed in an aqueous suspension to reduce the transport of non-magnetic particles. The analyses can be useful for identifying and quantifying the presence of magnetics in minerals, as well as for evaluating the potential for magnetic separation operations in industrial processes.