Q:

Dwarf Fortress no Flux Stone

I settled somewhere with Flux Stone.
I'm on the 12th layer and I still haven't struck Flux Stone.
Is this a bug, or do I need to dig deeper for Flux Stone?

A:

Deeper and possibly wider.
Bear in mind that your location almost always had more than one biome; not all of them may have been described as containing flux stone.
I recommend digging a few exploratory shafts well away from your actual fort, going straight down for a couple dozen Z-levels just to see what layers you punch through.

