GEOLOGY

Detailed explanation-1: -The composition of a mineral can be expressed as a CHEMICAL FORMULA, which simply gives the proportions of the different elements and groups of elements in the mineral. The latter notion (groups of elements) comes into play for those minerals which have a restricted range of composition.

Detailed explanation-2: -Minerals have definite chemical composition All minerals have a definite chemical composition. To understand chemical composition, we first need to understand element s and bonds. A chemical element is a pure substance, all the atoms are the same.

Detailed explanation-3: -By its definition as a homogeneous solid, a mineral is composed of a single solid substance of uniform composition that cannot be physically separated into simpler chemical compounds. Homogeneity is determined relative to the scale on which it is defined.

Detailed explanation-4: -A mineral is an inorganic solid with a definite (fixed) composition and an orderly arrangement of fundamental components (or atoms) called a crystal structure. Minerals are inorganic, which means that they are without life.