What is the commonest metal?

We find lumps of gold and silver, zinc and copper in the rocky crust of the earth. But we never find a piece of aluminum tucked fn the ground   and aluminum is the most plentiful of all the metals. It is present in all the clays and in many kinds of mud,

The metal aluminum we use to make frying pans and a million other objects is taken from the ore bauxite. This rocky ore is a blend of aluminum, clay, silicas and maybe limestones   though the metal aluminum is completely hidden from view.