A mineral is a naturally occurring, inorganic, solid which
possesses a characteristic internal atomic structure and a
definite chemical composition. If we take the definition of a
mineral term by term, it becomes easier to understand.
Substances that have these features will also have distinctive
physical properties such as color, crystal form, cleavage,
luster, streak, etc. You can find out more about minerals by
clicking on the buttons on the left. Click here to go to the
mineral identification chart.