The word “mineral” is used in many different ways. Here are some examples:

Geologist’s Definition

A formal definition of a mineral, as used by geologists would be: A naturally occurring inorganic solid that has a definite chemical composition, and an ordered internal structure. Geologists are able to identify minerals because they have characteristic physical properties.

Nutritionist’s Definition

The word “mineral” also has a nutritional meaning, which is different from the meaning used by geologists.

A nutritionist uses the word mineral when referring to the many inorganic substances that organisms need to grow, repair tissue, metabolize, and carry out other body processes. Mineral nutrients for the human body include: iron, calcium, copper, sulfur, phosphorus, magnesium and many others.