The Mineral Celestite
Minerals are the natural material that every inorganic material on planet Earth is composed of. They are the foundation of both our planet and most human industry.
Minerals can be defined as naturally occurring, inorganic substances that have characteristic chemical composition. Because individual minerals must have the same chemical composition, they must also share distinctive physical properties and have a crystalline atomic structure. This means that the atoms or molecules that make up each mineral exist in an orderly three dimensional arrangement. The structure that results from such arrangement is called a crystal.