This is what happens to essentially all materials. Metals, Plastics, Oil, Stone, Sand, Concrete all come from things that have been standing mostly still for millions of years before we extracted their components
Heck, even plastic is pretty replaceable as reducing bio-material into plastic isn't unheard of. (The first plastics were made out of casein from milk).
The oldest of those are literally legacies of the first major burst of biological activity on Earth, which released oxygen into the atmosphere, which for most of a billion of years or so resulted in reducing unoxidized minerals, particularly iron, in the Great Rusting.