Rock and minerals have many diferent ores in them at different percentage. So I wanted to have a laterite ore type that has nickel, cobalt and bauxite to be realistic. For iron, I used magnetite, a mineral that has a high percentage of iron ore in it, same for malachite with copper. Pure iron and copper ore deposit doesn't really exist, as they are often mix with different other ores and mineral at diferent percentages.
