A series of experiments was done on the magnetic separation of
a greisen-type ore to evaluate the newly introduced parameters.
The average composition of the bulk sample used was about 67%
quartz, 20% zinnwaldite, 8% topaz, 3% muscovite, and 2% others.
This material can be reduced to a binary system of valuable mineral
(zinnwaldite) and gangue. This simplification is valid due to
the magnetic susceptibilities and the grades of the associated
minerals.