Typically platinum is found in its pure native form as platiniridium, which is a natural alloy of platinum and iridium (another precious metal).
World Platinum Supply by Region
Platinum is surprisingly not mined in many nations around the world, and the vast majority of all platinum supplies comes from one region (southern Africa).
Platinum is mostly mined in South Africa (+70%), followed by Russia, Zimbabwe, Canada, the USA, Australia, and other nations.
Platinum Mining Process
Platinum Investing Supply Demand Fundamentals