For those with even less of a chemistry background than I have: rust is iron oxide, and pyrite is iron sulfide. It's a good analogy because oxygen and sulfur are in the same group (column) in the periodic table, so they have some chemical similarities.
There was a music software language called Pyrite. It ran inside of Max graphic programming environment. It then evolved into SuperCollider which is now one of the most used music programming languages in experimental and academic music. Http://github.com/supercollider
But that pyrite hasn't been active for a long time.
