Discover the world of rocks and minerals - Mohs' hardness scale, fossil fuels, rock formation, and gems are all explained and accompanied by stunning photographs and artwork. Fascinating facts about strange mineral properties, rock erosion, and features help to make this book an indispensable geological guide. Detailed images provide a fantastic visual account that is ideal for use at home and at school. - Ten bulleted facts on every spread - Fascinating fact panels - Highlighted subject areas - Hundreds of color illustrations and pictures