Vitamins and minerals, vitamins and minerals . . . how often do we hear that phrase? But nutritional minerals are totally not the same as geological minerals. The English language happens to use the same word for two very different things. Geological minerals are, you know, minerals. But dietary minerals are something else entirely. They are just ions! Those aren't minerals under any geologist's definition.
But still: what if we could get our minerals from actual minerals instead of animals and vegetables? That might be fun. But first, you'd have to make sure that those minerals wouldn't shatter your teeth, which are Mohs hardness 5. I looked around, and I explain in "Dietary Minerals and Real Minerals" that we could do pretty well that way, even if real minerals aren't very appetizing and are hard to chew. (Except for salt. Salt is always appetizing.)