Natural Occurrence, Chief Minerals, and Ores

The magmatic origin of PGM deposits have genetic affinities to both Ni-Cu sulfides and chromites. Actually, there exist several possible magmatic processes during which the concentration of PGMs occurs  

Significant PGM production has come from the following sources  

The bulk of present world production comes from the Republic of South Africa and, to a lesser extent, Russian deposits, and most presently known reserves are within Merenski-type environments (Bushveld and Stillwater complexes). 

Naville, J. (1879) Traite de la Grande Industrie Chimique, Tome I. Acide Sulfurique et Olium. Masson Cie, Paris. 

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