Natural PGE alloys minerals. Placer platinum "PGE "nugget Platinum sulfide ore. Cooperite. Lode PGE (Platinum-Group Element) mining extracts these valuable metals (Platinum, Palladium, Rhodium) directly from hard rock deposits, often within mafic/ultramafic intrusions where PGEs crystallize with chromite, forming magmatic ores. This contrasts with placer mining, which recovers eroded, alluvial PGEs from riverbeds, with both deposit types often originating from the same underlying lode sources. Major mining involves Magmatic Ni-Cu-Cr -PGE sulphides or PGE-dominant intrusions, using methods to extract metals from sulfide-rich ores or chromitites. Non magnetic. Immediate reaction catalysis with hydrogen peroxide.