The encyclopedia contains descriptions of more than 600 types of minerals and their varieties. It includes not only the most common minerals, including precious stones and valuable metals, but also species that are extremely rare. The publication is richly illustrated. Color illustrations and photographs. Encyclopedia of Minerals is a book for all people interested in the beautiful world of minerals. They can find here hundreds of photographs of beautiful crystals and crystal aggregates, together with a list of classic and new occurrences for each mineral species. Minerals are arranged into chapters according to the mineral system.