One of the defining functions of Rhodium is its incredible resistance to oxidation. As opposed to iron, which conveniently forms an oxide layer when subjected to oxygen, Rhodium stays almost unchanged. Rhodium is quite complicated to mine. It can be found with PGM metals, which includes palladium and platinum. https://riverlpccc.creacionblog.com/35498341/the-ultimate-guide-to-rhodium-bars-apmex