William Rice 
World of Rocks & Minerals [PDF ebook] 

What is the difference between a rock and a mineral? Readers will learn the answer to that and much more in this fascinating informational text! Igneous rock, sedimentary rock, metamorphic rock, geologists, and gemstones are some of the topics that are introduced through clear, stunning photos, interesting charts and graphs, supportive text, and an accessible glossary and index. An intriguing and captivating hands-on lab activity is featured to encourage readers to learn more about geology!