Talk:Demon Altar/@comment-184.65.105.23-20120801040716/@comment-4674838-20120801053352

Breaking more demon altars *does* cause more ore to spawn, and you should be finding some groupings of it of in the neighborhood of ~ 5-20 blocks of ore.

But, it depends where you look and what your map size is. If your map size is Small, you'll find stuff much closer together. By contrast, on a Large map, the ore deposits will be farther apart and take longer for you to find.

Tip: In general, the further underground you go, the more likely you are to find these hardmode ores.

Tip 2: The best place to find Adamantite is to search the roof of the underworld. E.g. go all the way to bottom of your Hellevator so that you're in the underworld, then use your wings / grappling hook etc. to search the roof.