Method for organic creation of durable materials?

Hi!

I have a question that I’ve been thinking about and researching for a little while that I think y’all might have some insight on.

For context, I’m working on a sci-fi concept for a video game aiming to start development within the next 6 months. At the core of the story for this game is an organic, desert-dwelling creature. This creature produces a miracle substance that it then stores in its bones, which can later be harvested by humans and which leads to huge technological breakthroughs. This material is super strong and also works as a fantastic fuel.

Since I want this to be as realistic as possible, what substance could kickstart an industrial revolution like this if it becomes available? While the properties of strength and high chemical energy content are the most important, it’s also important that it could be formed from only things found in normal sand, rocks, and/or volcanic areas, and that it can be theoretically created (even if its not something that could be created by an animal on our earth, it would be created by these hypothetical creatures as both a structural element and as long-term energy storage).

Thanks in advance! (Also, if this is against the rules please lmk where would be best to ask this question).