Legend (Minerals/Critical_Mineral_Systems)

Alkalic porphyry (1) Basin brine path (2) Chemical weathering (3) Mafic magmatic (4) Magmatic rare earth elements (5) Marine chemocline (6) Metamorphic (7) Meteoric recharge (8) Orogenic (9) Placer (10) Porphyry Cu-Mo-Au (11) Porphyry Sn (granite related) (12) Volcanogenic seafloor (13)