Other ores:
Nickel: Makes cheap counterfeit coins that could be saved for the Coin Gun.
Antimony: Boosts lead gear when combined in an alloy. Cannot make gear by itself. PHM. Maybe could also used for power sources.
Chromium: Ore that can be used to make clear and reflective furniture. PHM. Lacks a tier of armor or weapons.
Quicksilver: Ore that is affected by gravity, and is almost liquidlike. Poisonous to touch. Has to be mined in a special way to get uses in toxic damage. Hardmode, and references mercury.
Bismuth: Toxic ore for Hardmode. Makes explosives and weapons.