https://wccftech.com/how-to/v-rising-how-to-get-copper/

As you progress through V Rising, either in PvE or PvP mode, you will need new materials to craft items and equipment for your character. Copper Ore makes no exception, and you will start using it early in the game to unlock new, powerful weapons and gear. It will also come in handy when building new structures and upgrades for your castle. In this V Rising guide, you will find all the information you need about Copper Ore, how to get it early in the game and how to make Copper Ingots.

As you explore the map, you will eventually find some orange rocks that, once smashed, will give you Copper. They are often placed on either side of Vardoran’s paths, but if you want to get the best out of your time, you’d better head to the Bandit Copper Mine in the Farbane Woods. The exact location of this place is marked on the map below.