A mineral is a naturally occurring substance having a definite chemical composition. Minerals are formed by natural processes and do not require any human interference. Minerals are generally formed in various environments and under different conditions. Minerals can be made of one element or more than one element combined in different proportions. Minerals are unevenly distributed throughout the space. Some minerals are found in areas that are not easily accessible to humans. A mineral can be identified by its physical characteristics such as colour, density, and strength, and they can also be identified by chemical properties.