| − | Inorganic crystalline substances found naturally in the earth.<ref>Wile, Dr. Jay L. ''Exploring Creation Through General Science''. Anderson: Apologia Educational Ministries, Inc.
| + | '''Minerals''' are inorganic [[crystal]]line substances found naturally in the [[earth]].<ref>Wile, Dr. Jay L. ''Exploring Creation With General Science''. Anderson: Apologia Educational Ministries, Inc. 2000</ref> |