What happened to all the copper and other ores?

So I started a new world with the 1.2 update, and spent several hours mining minerals. From all my mining, not once did I come across any copper, which is supposed to be the most common mineral found in the game. What happened to it?


From the patch notes:

  • Your world has a chance to get alternative ore as a replacement for copper, iron, silver, and gold

There's no indication on what it's replaced with in the notes.

Gigazelle has found the following:

  • copper = tin
  • iron = lead
  • silver = tungsten
  • gold = platinum

Hardmode ores:

  • cobalt = palladium
  • mithril = orichalcum
  • adamantite = titanium