🧐
Just saw this mentioned in one of the episodes of the old "Farscape" space series -- a type of weapon that would turn living tissue to stone.

Yes exactly. Thank you for your comment.

This is how the change took place even in a much earlier time, the conversion of silicon into carbon. That's why there are so many fossils of huge tree stumps around the world and mountains in the shape of "human" figures or large animals. The transformation was under very high temperature and pressure.
No one thinks twice about why fossilized tree stumps exist when wood rots and decays in our world. It's the same with dead organisms - everything decays and rots, nothing turns to stone.