Rocks and Minerals Coloring Book What do magnetite, bauxite, chromite, sulphur, quartz and galena have in common? Each of these inorganic substances - as varied in color as they are in form and structure - is or contains an element needed to create an automobile. That intriguing bit of information, along with many other fascinating facts, can be found in this entertaining and enlightening coloring book. Hobbyists and collectors are invited to learn about rocks and minerals as they color 36 carefully rendered illustrations depicting: Tourmaline, Pyrite, Smoky Quartz, Amethyst geode, Malachite, Celestite, Aragonite, Agatized coral, Aurichalcite, Crazy Lace Agate, Beryl, Emerald, Amethyst, Garnet and 22 other examples.