When copper was dropped into the world, it was not complete with a set of tools, armor, a horse armor, a door, a trapdoor, or even a nugget. All blocks oxidize like vanilla copper does.
!!! IMPORTANT NOTE ON GAMEPLAY BALANCE !!!
Consider the mod 
Copper Drops. Copper Ore will drop a single Raw Copper without fortune (like Iron Ore).
1.19+: All features can be disabled in the config!
Items:
Copper Nugget
Copper Sword
Copper Pickaxe
Copper Axe
Copper Shovel
Copper Hoe
Copper Helmet
Copper Chestplate
Copper Leggings
Copper Boots
Copper Horse Armor
Oxidizing Blocks:
Copper Door
Copper Trapdoor
Copper Button
Copper Bars- Medium Weighted Pressure Plate
MY OTHER MODS
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.19.2, 1.19.1, 1.19
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
Copperized is a free Minecraft Java mod. Compatible with Minecraft 1.19.2, 1.19.1, 1.19, 1.18.2 and newer. Downloaded 835,246 times (via CurseForge). Download it and open it directly in the game.