Mineral

Any naturally occurring inorganic substance found in the earth's crust as a crystalline solid.

a substance that occurs naturally due to geological or biological processes and that has a specific chemical composition and properties.

A nutrient required to maintain health.

A naturally occurring inorganic element or compound having an orderly internal structure and characteristic chemical composition, crystal morphology, and physical properties such as density and hardness. Minerals are the fundamental units from which most rocks are made.