Main constituents of rocks, minerals are substances that have a chemical composition and properties physical well defined. They are formed during the different stages of the life of the planets: volcanism, formation of mountains and oceans, etc. These natural geological processes, which can be terrestrial or extraterrestrial, are often microscopic and very slow. Over time, splendid crystals take shape for the happiness of our eyes. Whether useful or aesthetic, minerals are an integral part of human society. With this slideshow, Futura presents you some iconic minerals.
.
fs12