Permineralization

Well, if it's so incredibly rare, how does the actual flesh-to-stone transformation physically happen? Like, if I'm holding a heavy stone ammonite, what was the actual recipe that made it?

it?Well, there are a few different pathways, but one of the most common chemical recipes is a process called permineralization.

Permineralization.

Yeah.

This typically happens with organisms that already have a porous internal structure.