Easy-to-use introductory illustrated guidesto discovering the natural world Rocks and Minerals covers 220 commonly found types of rock, mineral, and gemstone throughout the world. This pocket-size guide is the ideal companion for beginner geologists and contains practical advice and information for those wanting to further their interests. Full-color photographs illustrate each type of rock or mineral, including their crystalline structure or other identification features Information on distribution, chemical composition, hardness, color, and texture Detailed description and ID Fact File offers key identification information at a glance