Orichalcum Ore

Orichalcum Ore is a new Hardmode Ore that was introduced in the 1.2 patch.

Hardmode Ores are generated upon destroying a Demon Altar or Crimson Altar with a Pwnhammer.

Orichalcum is the replacement to Mythril.

Despite being the replacement for Mythril, it actually is stronger than it.

Trivia

 * Orichalcum is named for the fictional metal described by Plato in his work  "Critias", where it is mined only in the legendary lost city of Atlantis.