Ore spawners are special blocks that occasionally spawn an ore on top of them.
Ore spawners look almost exactly like normal stone except for one crucial factor: hitting them causes small cracks to appear. Therefore, if you have trouble figuring out whether a stone is a spawner or not, just hit it with anything (doesn't have to be a pick). Once small cracks appear, you know it's a spawner and just have to wait for an ore to spawn.
Types of Ore SpawnersEdit
Coal - Very Common (level 0)
Cobalt - Common (level 3)
Iron - Medium (level 5)
Titanium - Rare (level 10)
Gold - Very Rare (glitched)
Platinum - Super Rare (level 15)
Mystic - So rare you'll probably have maxed out your levels by the time you find it. Also, to increase their rarity, these ores use the standard stone texture. (level 20)