Minerals+definition+from+page+28+and+30

__ 1.- Minerals definition. Page 28 and 30. __
 * __ Minerals are solid composed of one or more chemical elements. __
 * E.g. Halite, quartz and pyrite.
 * __ Minerals are **naturally occuring ( they are not made by humans),** **inorganic(they do not come from living things),** solid substances. __
 * __ Minerals have a definite chemical composition, so a sample will always have the same composition. __