This is an UNOFFICIAL add-on to Terralith that re-adds normal Andesite, Diorite, and Granite blobs underground.
Andesite is such an important resource for the Create mod. Even though Terralith does add Andesite, Diorite, and Granite caves, many players do not realize this difference, and want it reverted to Vanilla.
It is worth noting that these caves are common, and have above-ground indicators for finding them easily (see image below). And once they are found, since they are made entirely out of that stone type, it's easy to get large quantities of the stone. But of course, it is valid for players to want the Vanilla behavior returned.
Until a more permanent solution is created, this temporary add-on exists. This will likely work for future updates of Minecraft without changes.
