| Feed | Nonmagnetic | Magnetic medium | Magnetic strong |
Struvite (NH4MgPO4∙6H2O) | Ø | Ø | ○ | ○ |
Dittmarite (NH4MgPO4∙H2O) | × | × | × | × |
Newberyite (MgHPO4∙3H2O) | ○ | ○ | × | ∆ |
Plagioclase ((Ca, Na)(Si, Al4O8) | ∆ | × | ○ | ○ |
Quartz (SiO2) | ∆ | × | ○ | ○ |
Pyroxene (Mg2(SiO2)) | × | × | ○ | ○ |
Magnetite (Fe3O4) | × | × | ∆ | ○ |