Chris Pellant

A geology expert explains how to tell rocks from minerals and then shares secrets of spotting sulfides, chromates, igneous and metamorphic rocks, and more. "Designed for beginners and experienced collectors alike, DK's Smithsonian Handbook of Rocks and Minerals' explains what rocks or minerals are, how they are classified, and how to start a collection. A clear visual key illustrates the differences between igneous, metamorphic, and sedimentary rocks,...