Describe the request
Make sure to include:

1. What problem or issue would this enhancement solve?
   Inability to find ores that don't have samples, other than using a prospectors pickaxe on random rock surfaces.
2. Describe the feature itself - what would change, what would happen. In general more detail is good!
   Players would be able to configure what items are considered the "sample", that generates above an ore vein, making ore hunting for custom ores possible.

Meta Info

• TFC Version: 1.12.2-0.27.1.99 (at time of request)
• Is this a compatibility feature for other mods? Or a enhancement for TFC alone?
  Technically a TFC standalone enhancement, but most cases would use other mods.