The rocks I see in my world make sure they have iron ore around them
Where there is magma, there are a lot of minerals nearby
Iron ore at altitude of 40~60 in most places, don't dig too shallow.
In general, the veins are connected, so when you dig a vein, you may find another mineSo, when you find large veins such as granite and diorite, don't give up, dig, dig, and maybe find minerals on the edge
