You need to install mod from Wahazar - Rare Dense Ores

This add-on is created as a stub until Wahazar implements his idea with copper.

Alters the production of copper, cassiterite and bismuthin

Highlights:

• Surface Copper:

The frequency has changed by a factor of 2, but the thickness has increased

• Deep copper deposits:

Now you will come across large but rare specimens.

• Cassiterite ore of medium depth

Here I have changed only the ore to medium depth, they will be rare, but in large quantities.

• Bismuthin

It looks like cassiterite