Polonium?

A site named "halos" has some amazing evidence for creation. Granite cannot be re-created - so what? The halos from the radioactive isotope polonium are captured in granite's black flecks. If the granite formed over millions of years, this isotope could not have left "halos" as evidence of their viability. It dissipates and could not hang around while rocks "cool" or otherwise transform over time. It would have to be made in an instance.