See mineral in Webster's New World College Dictionary
noun
an inorganic substance occurring naturally in the earth and having a consistent and distinctive set of physical properties (e.g., a usually crystalline structure, hardness, color, etc.) and a composition that can be expressed by a chemical formula: sometimes applied to substances in the earth of organic origin, such as coal
of, like, consisting of, or containing a mineral or minerals
See mineral in American Heritage Dictionary 4
(mĭnˈər-əl)
noun
A naturally occurring, homogeneous inorganic solid substance having a definite chemical composition and characteristic crystalline structure, color, and hardness.
Any of various natural substances, as:
a. An element, such as gold or silver.
b. An organic derivative, such as coal or petroleum.
c. A substance, such as stone, sand, salt, or coal, that is extracted or obtained from the ground or water and used in economic activities.
A substance that is neither animal nor vegetable; inorganic matter.
An inorganic element, such as calcium, iron, potassium, sodium, or zinc, that is essential to the nutrition of humans, animals, and plants.