There is a mod called Cubic Chunks which changes the shape of chunks and allows the world to generate downwards for millions of blocks without bedrock.

I want to make a mod which adds new ore/stone gen in those new areas below Y level 0, however vanilla ore gen will not work.

When generating CC ores I need to place the ores during cube population, not chunk population, however I do not know how to do this.

Also the way I make mods is mostly using Mcreator but also editing the code to customise things in a way which Mcreator cannot normally do.

Could someone help me by suggesting a way to do this? If not with ore gen then perhaps using entities or structures to generate the ores?