Currently doing some minor tweaks and testing.
Kimberlite now shows up in large clusters as well as veins, since in RL it actually shows up in giant columns. I've also added Fireheart, Storm Crystal, Flare Crystal, and Ward Crystal to Kimberlite.
Alum Shale is now a nice dark blue, like Kimberlite, so those of you who like that color have a layer stone to play with. Plus it kind of looks dark and oily, the way Alum shale should.
There is a new tree found in good lands called Silverwood. It is somewhat rare, but the wood is quite valuable and as hard as iron. It gives the poor Elves a slightly chance of surviving longer in world gen, now. And gives the dwarves more reason to clearcut joyous forests, I guess.