Minerals are naturally occurring elements or chemical compounds, formed by geological processes such as volcanic eruptions, that have a crystal structure. They are beautiful, essential and hold the secret of the technological advances of the future. This handy 8-page fold-out guide is designed to help readers identify 39 common minerals found around the world. At least one striking colour photograph and some key facts are provided for each mineral featured. The guide is double-sided and gloss laminated with a concertina fold.