Can't mine Orichalcum Ore

[John Smith]

I have a Palladium pickaxe but can't break Orichalcum Ore. Yes it is Orichalcum Ore i checked sprites on wiki.

[Fluxxation]

Try using imksushi or some other mod to swap over ores to their counterpart. May be a world bug or smth. See if a cobalt pick works.