それが何であるか
Not one mineral but a rock of aluminium hydroxides left after millions of years of tropical weathering.
産出素材
Aluminium
A light silvery metal made by passing an enormous electric current through dissolved bauxite — which is why people…
Bauxite
A reddish soil-like rock, formed where tropical rain has rotted rock for millions of years, and the only ore…
Gallium
A silvery metal that melts in your hand, and the basis of the compound semiconductors in fast chargers, radar and…