Molten Pickaxe

Molten Pickaxes are the sixth and highest tier of Pickaxes. Like all pickaxes, they are used to mine a majority of blocks and ores.

A Molten Pickaxe can destroy most blocks in one hit.

One hit needed to destroy at about 2.3 blocks a second:
 * Dirt
 * Grass
 * Mud
 * Stone
 * Copper
 * Iron
 * Silver
 * Gold
 * Ash
 * Obsidian
 * Gems

Two hits needed to destroy at about 1.2 blocks a second:
 * Hellstone
 * Meteorite
 * Ebonstone
 * Colored Dungeon Bricks

Please note that the Nightmare Pickaxe also mines Dirt and Mud Blocks with a single hit, but it's much faster than the Molten Pickaxe. For this reason, the Nightmare pickaxe actually mines Dirt and Mud blocks faster than the Molten Pickaxe and therefore it's a good idea to not throw away your Nightmare Pickaxe and keep it in your inventory for scenarios rich in Dirt or Mud. All the other blocks are mined faster by the Molten Pickaxe.