Ah right you suggested so much Ore Stuff in the past. XD
For a Guide on CustomOreGen I would need to understand CustomOreGen in the first place. I dont even know if it still works or not. The newer Rock Layer Generator has replaced a lot of things.
Black Sand and Magnetite are the same thing. And you can get Vanadium-Magnetite from Black Sand too.
And again, the Rock Layer Generator has replaced a LOOOOOOOT of Ore Functionality, so you suggest using outdated Mechanics right now.
As for Sands, maybe I will add more of them later.