Elemental Plane of Earth

The Elemental Plane of Earth is essentially a grand block of earthen materials, primarily substances like Dirt, Sand, and Flint, occasionally peppered by pockets of air, water, or the most dreaded of fire and lava. One would think it is a good place to get some mining done, if you can find an air pocket, but it's actually one of the worst due to the rarity of metals and minerals, which aren't purely earthen. Finding such materials is even harder than finding a needle in a haystack.